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749 Malzovia

January 01, 1970

749 Malzovia (prov. designation: A913 GD or 1913 RF) is a stony background asteroid from the inner regions of the asteroid belt, approximately 11 kilometers (6.8 miles) in diameter. It was discovered on 5 April 1913, by Russian astronomer Sergey Belyavsky at the Simeiz Observatory on the Crimean peninsula.[1] The elongated S-type asteroid has a rotation period of 5.9 hours. It was named after Russian amateur astronomer Nikolai Maltsov (S. I. Maltsov) who founded the discovering Simeïs Observatory in 1900.[2]

749 Malzovia
Modelled shape of Malzovia from its lightcurve
Discovery [1]
Discovered byS. Belyavskyj
Discovery siteSimeiz Obs.
Discovery date5 April 1913
Designations
(749) Malzovia
Named after
Nikolai Maltsov [2]
(Russian amateur astronomer)
A913 GD · 1950 JO
1968 XA · 1913 RF
Orbital characteristics [3]
Epoch 31 May 2020 (JD 2459000.5)
Uncertainty parameter 0
Observation arc107.00 yr (39,080 d)
Aphelion2.6316 AU
Perihelion1.8558 AU
2.2437 AU
Eccentricity0.1729
3.36 yr (1,228 d)
289.14°
0° 17m 35.88s / day
Inclination5.3946°
109.76°
128.97°
Physical characteristics
Mean diameter
5.9274±0.0002 h[10][a]
  • (242.0°, 61.0°) (λ1/β1)[11]
  • (50.0°, 58.0°) (λ2/β2)[11]

Orbit and classification edit

Located in the region of the Flora family (402),[12] a giant asteroid family and the largest family of stony asteroids, Malzovia is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.[4][5][6] It orbits the Sun in the inner main-belt at a distance of 1.9–2.6 AU once every 3 years and 4 months (1,228 days; semi-major axis of 2.24 AU). Its orbit has an eccentricity of 0.17 and an inclination of 5° with respect to the ecliptic.[3] The body's observation arc begins at the German Heidelberg Observatory on 30 April 1913, or 25 days after its official discovery observation at Simeiz Observatory.[1]

Naming edit

This minor planet was named after Russian amateur astronomer Nikolai Sergeevich Maltsov (S. I. Malzov) who founded the discovering Simeiz Observatory, which he later donated to the Pulkovo Observatory in 1911. Malzov was a close friend of Sergey Belyavsky and of Oskar Backlund, after whom asteroid 856 Backlunda was named. After World War I, Malzov lived at Menton, on the French Riviera near Italy. The naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 75).[2]

Physical characteristics edit

In the Tholen and Bus–Binzel SMASS classification, Malzovia is a common, stony S-type asteroid.[3]

Rotation period edit

In February 2020, a rotational lightcurve of Malzovia was obtained from photometric observations by French amateur astronomer René Roy. Lightcurve analysis gave a well-defined rotation period of (5.9274±0.0002) hours with a high brightness variation of 0.50±0.02 magnitude, indicative of its elongated shape (U=3).[10] Alternative period determinations by Julian Oey and Frederick Pilcher in May 2014 gave very similar results of (5.9275±0.0002) and (5.9279±0.0001) hours, respectively, both with an amplitude of 0.30 magnitude (U=3−/3−).[13][14][a]

Poles edit

Published in 2018, thermophysical modeling of Malzovia from thermal data obtained from the Wide-field Infrared Survey Explorer (WISE) gave a sidereal period of (5.92748±0.00002 h) and two spin axes at (53.0°, 37.0°) and (242.0°, 46.0°) in ecliptic coordinates (λ, β).[11] Previously, two lightcurves published in 2016, using modeled photometric data from the Lowell Photometric Database (LPD) and other sources, gave a period of (5.92749±0.00001) and 5.92748±0.00005 hours, respectively. Each modeled lightcurve also determined two poles at (53.0°, 37.0°) and (242.0°, 46.0°), as well as (55.0°, 46.0°) and (246.0°, 55.0°), respectively.[15][16]

Diameter and albedo edit

According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's WISE telescope, Malzovia measures (11.065±0.071) and (12.13±0.26 km) kilometers in diameter and its surface has a low albedo of (0.270±0.029) and (0.239±0.011), respectively.[7][8][9]

The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 and calculates a diameter of 12.98 kilometers based on an absolute magnitude of 11.6.[12] The WISE team also published several alternative mean-diameters of (11.11±2.12 km), (11.658±2.526 km) and (11.724±0.056 km), with a corresponding albedo of (0.41±0.12), (0.351±0.144) and (0.2444±0.0464).[5][12]

Notes edit

  1. ^ a b Lightcurve plot of (749) Malzovia, by Frederick Pilcher (2014) at the Organ Mesa Observatory (G50) in Arizona. Rotation period 5.9279±0.0001 hours with a brightness amplitude of 0.30±0.03 mag. Quality code is 3–. Summary figures at the LCDB and ASLC website.

References edit

  1. ^ a b c d e "749 Malzovia (A913 GD)". Minor Planet Center. Retrieved 5 June 2020.
  2. ^ a b c Schmadel, Lutz D. (2007). "(749) Malzovia". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 71. doi:10.1007/978-3-540-29925-7_750. ISBN 978-3-540-00238-3.
  3. ^ a b c d e f g h i "JPL Small-Body Database Browser: 749 Malzovia (A913 GD)" (2020-04-28 last obs.). Jet Propulsion Laboratory. Retrieved 5 June 2020.
  4. ^ a b "Asteroid 749 Malzovia – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 5 June 2020.
  5. ^ a b c "Asteroid 749 Malzovia". Small Bodies Data Ferret. Retrieved 5 June 2020.
  6. ^ a b Zappalà, V.; Bendjoya, Ph.; Cellino, A.; Farinella, P.; Froeschle, C. (1997). "Asteroid Dynamical Families". NASA Planetary Data System: EAR-A-5-DDR-FAMILY-V4.1. Retrieved 5 June 2020.} (PDS main page)
  7. ^ a b c d Mainzer, A. K.; Bauer, J. M.; Cutri, R. M.; Grav, T.; Kramer, E. A.; Masiero, J. R.; et al. (June 2016). "NEOWISE Diameters and Albedos V1.0". NASA Planetary Data System. Bibcode:2016PDSS..247.....M. Retrieved 5 June 2020.
  8. ^ a b c Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. S2CID 119293330.
  9. ^ a b c d Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153)
  10. ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (749) Malzovia". Geneva Observatory. Retrieved 5 June 2020.
  11. ^ a b c Hanuš, J.; Delbo', M.; Ďurech, J.; Alí-Lagoa, V. (July 2018). "Thermophysical modeling of main-belt asteroids from WISE thermal data". Icarus. 309: 297–337. arXiv:1803.06116. Bibcode:2018Icar..309..297H. doi:10.1016/j.icarus.2018.03.016. ISSN 0019-1035. S2CID 54978216.
  12. ^ a b c "LCDB Data for (749) Malzovia". Asteroid Lightcurve Database (LCDB). Retrieved 5 June 2020.
  13. ^ Oey, Julian (January 2016). (PDF). Minor Planet Bulletin. 43 (1): 45–51. Bibcode:2016MPBu...43...45O. ISSN 1052-8091. Archived from the original (PDF) on 3 October 2020. Retrieved 5 June 2020.
  14. ^ Pilcher, F. (October 2014). "Rotation Period Determinations for 24 Themis, 65 Cybele, 108 Hecuba, 530 Turandot, and 749 Malzovia" (PDF). Minor Planet Bulletin. 41 (4): 250–252.
  15. ^ Ďurech, J.; Hanuš, J.; Oszkiewicz, D.; Vančo, R. (March 2016). "Asteroid models from the Lowell photometric database". Astronomy and Astrophysics. 587: A48. arXiv:1601.02909. Bibcode:2016A&A...587A..48D. doi:10.1051/0004-6361/201527573. ISSN 0004-6361. S2CID 118427201.
  16. ^ Hanus, J.; Durech, J.; Oszkiewicz, D. A.; Behrend, R.; Carry, B.; Delbo, M.; et al. (February 2016). "New and updated convex shape models of asteroids based on optical data from a large collaboration network". Astronomy and Astrophysics. 586: 24. arXiv:1510.07422. Bibcode:2016A&A...586A.108H. doi:10.1051/0004-6361/201527441. S2CID 119112278.

External links edit

  • Lightcurve Database Query (LCDB), at www.minorplanet.info
  • Dictionary of Minor Planet Names, Google books
  • Asteroids and comets rotation curves, CdR – Geneva Observatory, Raoul Behrend
  • Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
  • 749 Malzovia at AstDyS-2, Asteroids—Dynamic Site
    • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
  • 749 Malzovia at the JPL Small-Body Database  
    • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

January 01, 1970
malzovia, prov, designation, a913, 1913, stony, background, asteroid, from, inner, regions, asteroid, belt, approximately, kilometers, miles, diameter, discovered, april, 1913, russian, astronomer, sergey, belyavsky, simeiz, observatory, crimean, peninsula, el. 749 Malzovia prov designation A913 GD or 1913 RF is a stony background asteroid from the inner regions of the asteroid belt approximately 11 kilometers 6 8 miles in diameter It was discovered on 5 April 1913 by Russian astronomer Sergey Belyavsky at the Simeiz Observatory on the Crimean peninsula 1 The elongated S type asteroid has a rotation period of 5 9 hours It was named after Russian amateur astronomer Nikolai Maltsov S I Maltsov who founded the discovering Simeis Observatory in 1900 2 749 MalzoviaModelled shape of Malzovia from its lightcurveDiscovery 1 Discovered byS BelyavskyjDiscovery siteSimeiz Obs Discovery date5 April 1913DesignationsMPC designation 749 MalzoviaNamed afterNikolai Maltsov 2 Russian amateur astronomer Alternative designationsA913 GD 1950 JO1968 XA 1913 RFMinor planet categorymain belt 1 3 inner background 4 5 6 Orbital characteristics 3 Epoch 31 May 2020 JD 2459000 5 Uncertainty parameter 0Observation arc107 00 yr 39 080 d Aphelion2 6316 AUPerihelion1 8558 AUSemi major axis2 2437 AUEccentricity0 1729Orbital period sidereal 3 36 yr 1 228 d Mean anomaly289 14 Mean motion0 17m 35 88s dayInclination5 3946 Longitude of ascending node109 76 Argument of perihelion128 97 Physical characteristicsMean diameter11 065 0 071 km 7 8 12 13 0 26 km 9 Synodic rotation period5 9274 0 0002 h 10 a Pole ecliptic latitude 242 0 61 0 l1 b1 11 50 0 58 0 l2 b2 11 Geometric albedo0 239 0 011 9 0 270 0 029 7 8 Spectral typeTholen S 3 SMASS S 3 B V 0 857 0 020 3 U B 0 504 0 030 3 Absolute magnitude H 11 6 1 3 11 82 7 9 Contents 1 Orbit and classification 2 Naming 3 Physical characteristics 3 1 Rotation period 3 2 Poles 3 3 Diameter and albedo 4 Notes 5 References 6 External linksOrbit and classification editLocated in the region of the Flora family 402 12 a giant asteroid family and the largest family of stony asteroids Malzovia is a non family asteroid of the main belt s background population when applying the hierarchical clustering method to its proper orbital elements 4 5 6 It orbits the Sun in the inner main belt at a distance of 1 9 2 6 AU once every 3 years and 4 months 1 228 days semi major axis of 2 24 AU Its orbit has an eccentricity of 0 17 and an inclination of 5 with respect to the ecliptic 3 The body s observation arc begins at the German Heidelberg Observatory on 30 April 1913 or 25 days after its official discovery observation at Simeiz Observatory 1 Naming editThis minor planet was named after Russian amateur astronomer Nikolai Sergeevich Maltsov S I Malzov who founded the discovering Simeiz Observatory which he later donated to the Pulkovo Observatory in 1911 Malzov was a close friend of Sergey Belyavsky and of Oskar Backlund after whom asteroid 856 Backlunda was named After World War I Malzov lived at Menton on the French Riviera near Italy The naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 H 75 2 Physical characteristics editIn the Tholen and Bus Binzel SMASS classification Malzovia is a common stony S type asteroid 3 Rotation period edit In February 2020 a rotational lightcurve of Malzovia was obtained from photometric observations by French amateur astronomer Rene Roy Lightcurve analysis gave a well defined rotation period of 5 9274 0 0002 hours with a high brightness variation of 0 50 0 02 magnitude indicative of its elongated shape U 3 10 Alternative period determinations by Julian Oey and Frederick Pilcher in May 2014 gave very similar results of 5 9275 0 0002 and 5 9279 0 0001 hours respectively both with an amplitude of 0 30 magnitude U 3 3 13 14 a Poles edit Published in 2018 thermophysical modeling of Malzovia from thermal data obtained from the Wide field Infrared Survey Explorer WISE gave a sidereal period of 5 92748 0 00002 h and two spin axes at 53 0 37 0 and 242 0 46 0 in ecliptic coordinates l b 11 Previously two lightcurves published in 2016 using modeled photometric data from the Lowell Photometric Database LPD and other sources gave a period of 5 92749 0 00001 and 5 92748 0 00005 hours respectively Each modeled lightcurve also determined two poles at 53 0 37 0 and 242 0 46 0 as well as 55 0 46 0 and 246 0 55 0 respectively 15 16 Diameter and albedo edit According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA s WISE telescope Malzovia measures 11 065 0 071 and 12 13 0 26 km kilometers in diameter and its surface has a low albedo of 0 270 0 029 and 0 239 0 011 respectively 7 8 9 The Collaborative Asteroid Lightcurve Link assumes an albedo of 0 24 and calculates a diameter of 12 98 kilometers based on an absolute magnitude of 11 6 12 The WISE team also published several alternative mean diameters of 11 11 2 12 km 11 658 2 526 km and 11 724 0 056 km with a corresponding albedo of 0 41 0 12 0 351 0 144 and 0 2444 0 0464 5 12 Notes edit a b Lightcurve plot of 749 Malzovia by Frederick Pilcher 2014 at the Organ Mesa Observatory G50 in Arizona Rotation period 5 9279 0 0001 hours with a brightness amplitude of 0 30 0 03 mag Quality code is 3 Summary figures at the LCDB and ASLC website References edit a b c d e 749 Malzovia A913 GD Minor Planet Center Retrieved 5 June 2020 a b c Schmadel Lutz D 2007 749 Malzovia Dictionary of Minor Planet Names Springer Berlin Heidelberg p 71 doi 10 1007 978 3 540 29925 7 750 ISBN 978 3 540 00238 3 a b c d e f g h i JPL Small Body Database Browser 749 Malzovia A913 GD 2020 04 28 last obs Jet Propulsion Laboratory Retrieved 5 June 2020 a b Asteroid 749 Malzovia Proper Elements AstDyS 2 Asteroids Dynamic Site Retrieved 5 June 2020 a b c Asteroid 749 Malzovia Small Bodies Data Ferret Retrieved 5 June 2020 a b Zappala V Bendjoya Ph Cellino A Farinella P Froeschle C 1997 Asteroid Dynamical Families NASA Planetary Data System EAR A 5 DDR FAMILY V4 1 Retrieved 5 June 2020 PDS main page a b c d Mainzer A K Bauer J M Cutri R M Grav T Kramer E A Masiero J R et al June 2016 NEOWISE Diameters and Albedos V1 0 NASA Planetary Data System Bibcode 2016PDSS 247 M Retrieved 5 June 2020 a b c Masiero Joseph R Grav T Mainzer A K Nugent C R Bauer J M Stevenson R et al August 2014 Main belt Asteroids with WISE NEOWISE Near infrared Albedos The Astrophysical Journal 791 2 11 arXiv 1406 6645 Bibcode 2014ApJ 791 121M doi 10 1088 0004 637X 791 2 121 S2CID 119293330 a b c d Usui Fumihiko Kuroda Daisuke Muller Thomas G Hasegawa Sunao Ishiguro Masateru Ootsubo Takafumi et al October 2011 Asteroid Catalog Using Akari AKARI IRC Mid Infrared Asteroid Survey Publications of the Astronomical Society of Japan 63 5 1117 1138 Bibcode 2011PASJ 63 1117U doi 10 1093 pasj 63 5 1117 online AcuA catalog p 153 a b Behrend Raoul Asteroids and comets rotation curves 749 Malzovia Geneva Observatory Retrieved 5 June 2020 a b c Hanus J Delbo M Durech J Ali Lagoa V July 2018 Thermophysical modeling of main belt asteroids from WISE thermal data Icarus 309 297 337 arXiv 1803 06116 Bibcode 2018Icar 309 297H doi 10 1016 j icarus 2018 03 016 ISSN 0019 1035 S2CID 54978216 a b c LCDB Data for 749 Malzovia Asteroid Lightcurve Database LCDB Retrieved 5 June 2020 Oey Julian January 2016 Lightcurve Analysis of Asteroids from Blue Mountains Observatory in 2014 PDF Minor Planet Bulletin 43 1 45 51 Bibcode 2016MPBu 43 45O ISSN 1052 8091 Archived from the original PDF on 3 October 2020 Retrieved 5 June 2020 Pilcher F October 2014 Rotation Period Determinations for 24 Themis 65 Cybele 108 Hecuba 530 Turandot and 749 Malzovia PDF Minor Planet Bulletin 41 4 250 252 Durech J Hanus J Oszkiewicz D Vanco R March 2016 Asteroid models from the Lowell photometric database Astronomy and Astrophysics 587 A48 arXiv 1601 02909 Bibcode 2016A amp A 587A 48D doi 10 1051 0004 6361 201527573 ISSN 0004 6361 S2CID 118427201 Hanus J Durech J Oszkiewicz D A Behrend R Carry B Delbo M et al February 2016 New and updated convex shape models of asteroids based on optical data from a large collaboration network Astronomy and Astrophysics 586 24 arXiv 1510 07422 Bibcode 2016A amp A 586A 108H doi 10 1051 0004 6361 201527441 S2CID 119112278 External links editLightcurve Database Query LCDB at www minorplanet info Dictionary of Minor Planet Names Google books Asteroids and comets rotation curves CdR Geneva Observatory Raoul Behrend Discovery Circumstances Numbered Minor Planets 1 5000 Minor Planet Center 749 Malzovia at AstDyS 2 Asteroids Dynamic Site Ephemeris Observation prediction Orbital info Proper elements Observational info 749 Malzovia at the JPL Small Body Database nbsp Close approach Discovery Ephemeris Orbit diagram Orbital elements Physical parameters Retrieved from https en wikipedia org w index php title 749 Malzovia amp oldid 1195667832, wikipedia, wiki, book, books, library,

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