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1240 Centenaria

March 05, 2023

1240 Centenaria, provisional designation 1932 CD, is a background asteroid from the outer regions of the asteroid belt, approximately 60 kilometers (37 miles) in diameter. It was discovered on 5 February 1932, by astronomer Richard Schorr at the Bergedorf Observatory in Hamburg, Germany.[1] The assumed C-type asteroid has a rotation period of 11.3 hours.[14] It was named for the 100th anniversary of the discovering observatory.[2]

1240 Centenaria
Discovery[1]
Discovered byR. Schorr
Discovery siteBergedorf Obs.
Discovery date5 February 1932
Designations
(1240) Centenaria
Pronunciation/sɛntɪˈnɛəriə/[6]
Named after
Bergedorf Observatory[2]
(100th anniversary)
1932 CD · 1930 VA
1930 XG · A915 RF
main-belt[1][3] · (outer)
background[4][5]
Orbital characteristics[3]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 0
Observation arc87.85 yr (32,088 d)
Aphelion3.3686 AU
Perihelion2.3653 AU
2.8670 AU
Eccentricity0.1750
4.85 yr (1,773 d)
123.27°
0° 12m 10.8s / day
Inclination10.169°
323.71°
24.117°
Physical characteristics
Mean diameter
50.28±18.22 km[7]
56.87±0.67 km[8]
58.85±1.5 km[9]
63.035±0.266 km[10][11]
70.946±0.624 km[12]
11.2907±0.0007 h[13]
0.0463[12]
0.056[10][11]
0.06[7]
0.0673[9]
0.072[8]
C (assumed)[14]
9.70[8][9][10][12]
10.10[1][3][7]

Orbit and classification

Centenaria is a non-family asteroid from the main belt's background population.[4][5] It orbits the Sun in the outer asteroid belt at a distance of 2.4–3.4 AU once every 4 years and 10 months (1,773 days; semi-major axis of 2.87 AU). Its orbit has an eccentricity of 0.18 and an inclination of 10° with respect to the ecliptic.[3] The asteroid was first observed as A915 RF at the United States Naval Observatory in September 1915. The body's observation arc begins at Lowell Observatory in December 1930, or 14 months prior to its official discovery observation at Bergedorf.[1]

Naming

This minor planet was named Centenaria to celebrate the 100th anniversary of the discovering Bergedorf Observatory on 31 October 1933. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 114).[2]

Physical characteristics

Centenaria is an assumed carbonaceous C-type asteroid.[14] The asteroid's determined geometric albedo agrees with a characterization into the C-complex (see below).

Rotation period

In July 2007, a rotational lightcurve of Centenaria was obtained from photometric observations by Julian Oey at the Kingsgrove Observatory (E19) in Australia. Lightcurve analysis gave a rotation period of 11.2907±0.0007 hours with a brightness variation of 0.20 magnitude (U=3).[13] The result supersedes previous period determinations of 11.2 hours with and amplitude of 0.12 by Laurent Bernasconi in March 2005 (U=2-),[15] and a period of 14 hours by Mario Di Martino at Pino Torinese in September 1983 (U=1).[16]

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Centenaria measures between 50 and 71 kilometers in diameter and its surface has an albedo between 0.046 and 0.072.[7][8][9][10][11][12] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0469 and a diameter of 58.61 kilometers based on an absolute magnitude of 10.1.[14] An asteroid occultation from July 2007 measured as cross-section of 58.0 km × 58.0 km.[4]

References

  1. ^ a b c d e "1240 Centenaria (1932 CD)". Minor Planet Center. Retrieved 15 December 2018.
  2. ^ a b c Schmadel, Lutz D. (2007). "(1240) Centenaria". Dictionary of Minor Planet Names – (1240) Centenaria. Springer Berlin Heidelberg. p. 103. doi:10.1007/978-3-540-29925-7_1241. ISBN 978-3-540-00238-3.
  3. ^ a b c d (2018-10-20 last obs.). Jet Propulsion Laboratory. Archived from the original on 18 September 2020. Retrieved 15 December 2018.
  4. ^ a b c "Asteroid 1240 Centenaria". Small Bodies Data Ferret. Retrieved 15 December 2018.
  5. ^ a b "Asteroid (1240) Centenaria – Proper elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 14 December 2018.
  6. ^ "centenarian". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
  7. ^ a b c d Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal. 814 (2): 13. arXiv:1509.02522. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. S2CID 9341381.
  8. ^ 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)
  9. ^ a b c d Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 15 December 2018.
  10. ^ 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: EAR-A-COMPIL-5-NEOWISEDIAM-V1.0. Bibcode:2016PDSS..247.....M. Retrieved 15 December 2018.
  11. ^ 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.
  12. ^ a b c d Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. S2CID 35447010. (catalog)
  13. ^ a b Oey, Julian (September 2008). "Lightcurve Analysis of Asteroids from the Kingsgrove and Leura Observatories in the 2nd Half of 2007". The Minor Planet Bulletin. 35 (3): 132–135. Bibcode:2008MPBu...35..132O. ISSN 1052-8091.
  14. ^ a b c d "LCDB Data for (1240) Centenaria". Asteroid Lightcurve Database (LCDB). Retrieved 15 December 2018.
  15. ^ Behrend, Raoul. "Asteroids and comets rotation curves – (1240) Centenaria". Geneva Observatory. Retrieved 15 December 2018.
  16. ^ di Martino, M. (December 1984). "Physical study of asteroids - Lightcurves and rotational periods of six asteroids". Icarus. 60 (3): 541–546.ResearchsupportedbytheConsiglioNazionaledelleRicerche. Bibcode:1984Icar...60..541D. doi:10.1016/0019-1035(84)90162-3. ISSN 0019-1035.

External links

  • Asteroid Lightcurve Database (LCDB), query form (info 16 December 2017 at the Wayback Machine)
  • Dictionary of Minor Planet Names, Google books
  • Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
  • Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
  • 1240 Centenaria at AstDyS-2, Asteroids—Dynamic Site
    • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
  • 1240 Centenaria at the JPL Small-Body Database  
    • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

March 05, 2023
1240, centenaria, provisional, designation, 1932, background, asteroid, from, outer, regions, asteroid, belt, approximately, kilometers, miles, diameter, discovered, february, 1932, astronomer, richard, schorr, bergedorf, observatory, hamburg, germany, assumed. 1240 Centenaria provisional designation 1932 CD is a background asteroid from the outer regions of the asteroid belt approximately 60 kilometers 37 miles in diameter It was discovered on 5 February 1932 by astronomer Richard Schorr at the Bergedorf Observatory in Hamburg Germany 1 The assumed C type asteroid has a rotation period of 11 3 hours 14 It was named for the 100th anniversary of the discovering observatory 2 1240 CentenariaDiscovery 1 Discovered byR SchorrDiscovery siteBergedorf Obs Discovery date5 February 1932DesignationsMPC designation 1240 CentenariaPronunciation s ɛ n t ɪ ˈ n ɛer i e 6 Named afterBergedorf Observatory 2 100th anniversary Alternative designations1932 CD 1930 VA1930 XG A915 RFMinor planet categorymain belt 1 3 outer background 4 5 Orbital characteristics 3 Epoch 27 April 2019 JD 2458600 5 Uncertainty parameter 0Observation arc87 85 yr 32 088 d Aphelion3 3686 AUPerihelion2 3653 AUSemi major axis2 8670 AUEccentricity0 1750Orbital period sidereal 4 85 yr 1 773 d Mean anomaly123 27 Mean motion0 12m 10 8s dayInclination10 169 Longitude of ascending node323 71 Argument of perihelion24 117 Physical characteristicsMean diameter50 28 18 22 km 7 56 87 0 67 km 8 58 85 1 5 km 9 63 035 0 266 km 10 11 70 946 0 624 km 12 Synodic rotation period11 2907 0 0007 h 13 Geometric albedo0 0463 12 0 056 10 11 0 06 7 0 0673 9 0 072 8 Spectral typeC assumed 14 Absolute magnitude H 9 70 8 9 10 12 10 10 1 3 7 Contents 1 Orbit and classification 2 Naming 3 Physical characteristics 3 1 Rotation period 3 2 Diameter and albedo 4 References 5 External linksOrbit and classification EditCentenaria is a non family asteroid from the main belt s background population 4 5 It orbits the Sun in the outer asteroid belt at a distance of 2 4 3 4 AU once every 4 years and 10 months 1 773 days semi major axis of 2 87 AU Its orbit has an eccentricity of 0 18 and an inclination of 10 with respect to the ecliptic 3 The asteroid was first observed as A915 RF at the United States Naval Observatory in September 1915 The body s observation arc begins at Lowell Observatory in December 1930 or 14 months prior to its official discovery observation at Bergedorf 1 Naming EditThis minor planet was named Centenaria to celebrate the 100th anniversary of the discovering Bergedorf Observatory on 31 October 1933 The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 H 114 2 Physical characteristics EditCentenaria is an assumed carbonaceous C type asteroid 14 The asteroid s determined geometric albedo agrees with a characterization into the C complex see below Rotation period Edit In July 2007 a rotational lightcurve of Centenaria was obtained from photometric observations by Julian Oey at the Kingsgrove Observatory E19 in Australia Lightcurve analysis gave a rotation period of 11 2907 0 0007 hours with a brightness variation of 0 20 magnitude U 3 13 The result supersedes previous period determinations of 11 2 hours with and amplitude of 0 12 by Laurent Bernasconi in March 2005 U 2 15 and a period of 14 hours by Mario Di Martino at Pino Torinese in September 1983 U 1 16 Diameter and albedo Edit According to the surveys carried out by the Infrared Astronomical Satellite IRAS the Japanese Akari satellite and the NEOWISE mission of NASA s Wide field Infrared Survey Explorer Centenaria measures between 50 and 71 kilometers in diameter and its surface has an albedo between 0 046 and 0 072 7 8 9 10 11 12 The Collaborative Asteroid Lightcurve Link derives an albedo of 0 0469 and a diameter of 58 61 kilometers based on an absolute magnitude of 10 1 14 An asteroid occultation from July 2007 measured as cross section of 58 0 km 58 0 km 4 References Edit a b c d e 1240 Centenaria 1932 CD Minor Planet Center Retrieved 15 December 2018 a b c Schmadel Lutz D 2007 1240 Centenaria Dictionary of Minor Planet Names 1240 Centenaria Springer Berlin Heidelberg p 103 doi 10 1007 978 3 540 29925 7 1241 ISBN 978 3 540 00238 3 a b c d JPL Small Body Database Browser 1240 Centenaria 1932 CD 2018 10 20 last obs Jet Propulsion Laboratory Archived from the original on 18 September 2020 Retrieved 15 December 2018 a b c Asteroid 1240 Centenaria Small Bodies Data Ferret Retrieved 15 December 2018 a b Asteroid 1240 Centenaria Proper elements AstDyS 2 Asteroids Dynamic Site Retrieved 14 December 2018 centenarian Oxford English Dictionary Online ed Oxford University Press Subscription or participating institution membership required a b c d Nugent C R Mainzer A Masiero J Bauer J Cutri R M Grav T et al December 2015 NEOWISE Reactivation Mission Year One Preliminary Asteroid Diameters and Albedos The Astrophysical Journal 814 2 13 arXiv 1509 02522 Bibcode 2015ApJ 814 117N doi 10 1088 0004 637X 814 2 117 S2CID 9341381 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 c d Tedesco E F Noah P V Noah M Price S D October 2004 IRAS Minor Planet Survey V6 0 NASA Planetary Data System IRAS A FPA 3 RDR IMPS V6 0 IRAS A FPA 3 RDR IMPS V6 0 Bibcode 2004PDSS 12 T Retrieved 15 December 2018 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 EAR A COMPIL 5 NEOWISEDIAM V1 0 Bibcode 2016PDSS 247 M Retrieved 15 December 2018 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 Mainzer A Grav T Masiero J Hand E Bauer J Tholen D et al November 2011 NEOWISE Studies of Spectrophotometrically Classified Asteroids Preliminary Results The Astrophysical Journal 741 2 25 arXiv 1109 6407 Bibcode 2011ApJ 741 90M doi 10 1088 0004 637X 741 2 90 S2CID 35447010 catalog a b Oey Julian September 2008 Lightcurve Analysis of Asteroids from the Kingsgrove and Leura Observatories in the 2nd Half of 2007 The Minor Planet Bulletin 35 3 132 135 Bibcode 2008MPBu 35 132O ISSN 1052 8091 a b c d LCDB Data for 1240 Centenaria Asteroid Lightcurve Database LCDB Retrieved 15 December 2018 Behrend Raoul Asteroids and comets rotation curves 1240 Centenaria Geneva Observatory Retrieved 15 December 2018 di Martino M December 1984 Physical study of asteroids Lightcurves and rotational periods of six asteroids Icarus 60 3 541 546 ResearchsupportedbytheConsiglioNazionaledelleRicerche Bibcode 1984Icar 60 541D doi 10 1016 0019 1035 84 90162 3 ISSN 0019 1035 External links EditAsteroid Lightcurve Database LCDB query form info Archived 16 December 2017 at the Wayback Machine Dictionary of Minor Planet Names Google books Asteroids and comets rotation curves CdR Observatoire de Geneve Raoul Behrend Discovery Circumstances Numbered Minor Planets 1 5000 Minor Planet Center 1240 Centenaria at AstDyS 2 Asteroids Dynamic Site Ephemeris Observation prediction Orbital info Proper elements Observational info 1240 Centenaria at the JPL Small Body Database Close approach Discovery Ephemeris Orbit diagram Orbital elements Physical parameters Retrieved from https en wikipedia org w index php title 1240 Centenaria amp oldid 1131433989, wikipedia, wiki, book, books, library,

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