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6255 Kuma

March 06, 2023

6255 Kuma, provisional designation 1994 XT, is a carbonaceous asteroid from the central region of the asteroid belt, approximately 22 kilometers in diameter. It was discovered on 5 December 1994, by Japanese astronomer Akimasa Nakamura at Kuma Kogen Astronomical Observatory on the Island of Shikoku, Japan.[12] It was named after the Japanese town of Kumakōgen.[2]

6255 Kuma
Discovery [1]
Discovered byA. Nakamura
Discovery siteKuma Kogen Obs.
Discovery date5 December 1994
Designations
(6255) Kuma
Named after
Kuma, Ehime
(Japanese town)[2]
1994 XT · 1975 VJ8
1981 DV3 · 1986 EB2
1988 SU4 · 1989 WP3
1992 OL1
main-belt · (middle)
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc41.37 yr (15,110 days)
Aphelion2.8302 AU
Perihelion2.6527 AU
2.7414 AU
Eccentricity0.0324
4.54 yr (1,658 days)
37.407°
0° 13m 1.56s / day
Inclination5.1205°
275.38°
193.11°
Physical characteristics
Dimensions15.53±3.67 km[3]
15.74±5.52 km[4]
16.955±0.135 km[5][6]
17.86±0.52 km[7]
21.50±9.05 km[8]
22.67 km (derived)[9]
22.72±1.7 km (IRAS:3)[10]
9.70±0.01 h[11][a]
0.0238 (derived)[9]
0.029±0.029[8]
0.0342±0.006 (IRAS:3)[10]
0.04±0.03[4]
0.058±0.004[7]
0.060±0.001[3][5][6]
C [9]
12.5[5][7][10] · 12.80[3][8] · 12.9[1][9] · 13.09[4]

Classification and orbit

Kuma is a dark asteroid that orbits the Sun in the central main-belt at a distance of 2.7–2.8 AU once every 4 years and 6 months (1,658 days). Its orbit has an eccentricity of 0.03 and an inclination of 5° with respect to the ecliptic.[1] The first precovery was taken at Crimea–Nauchnij in 1975, extending the asteroid's observation arc by 19 years prior to its discovery.[12]

Physical characteristics

Kuma is an assumed carbonaceous C-type asteroid.[9]

Rotation period

In September 2006, a rotational lightcurve of Kuma was obtained from photometric observations by American astronomer Brian Warner at the Palmer Divide Observatory (716) in Colorado. Lightcurve analysis gave a rotation period of 9.70 hours with a brightness amplitude of 0.15 magnitude (U=2).[11][a]

Diameter and albedo

According to the space-based surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its NEOWISE mission, Kuma measures between 15.53 and 22.72 kilometers in diameter, and its surface has a low albedo in the range of 0.029 to 0.06.[3][4][5][7][8][10]

The Collaborative Asteroid Lightcurve Link derives an even lower albedo of 0.02 and a diameter of 22.7 kilometers using an absolute magnitude of 12.9.[9]

Naming

This minor planet was named after the Japanese rural town Kuma (now Kumakōgen, Ehime), home of the discovering observatory that was built in 1992 for astronomical education and tourism. Kuma is located on the Japanese island of Shikoku, after which the minor planet 4223 Shikoku is named. The town supports local cultural activities and is a significant destination for pilgrims.[2] The approved naming citation was published by the Minor Planet Center on 14 May 1995 (M.P.C. 25231).[13]

Notes

  1. ^ a b Lightcurve plot of 6255 Kuma. Palmer Divide Observatory, B. D. Warner (2006). Summary figures at Collaborative Asteroid Lightcurve Link (CALL)

References

  1. ^ a b c d "JPL Small-Body Database Browser: 6255 Kuma (1994 XT)" (2017-03-21 last obs.). Jet Propulsion Laboratory. Retrieved 4 July 2017.
  2. ^ a b c Schmadel, Lutz D. (2007). "(6255) Kuma". Dictionary of Minor Planet Names – (6255) Kuma. Springer Berlin Heidelberg. p. 521. doi:10.1007/978-3-540-29925-7_5754. ISBN 978-3-540-00238-3.
  3. ^ 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. Retrieved 4 July 2017.
  4. ^ a b c d Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal. 152 (3): 12. arXiv:1606.08923. Bibcode:2016AJ....152...63N. doi:10.3847/0004-6256/152/3/63. Retrieved 4 July 2017.
  5. ^ 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. Retrieved 3 May 2016.
  6. ^ a b Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 5 December 2016.
  7. ^ 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)
  8. ^ a b c d Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 3 May 2016.
  9. ^ a b c d e f "LCDB Data for (6255) Kuma". Asteroid Lightcurve Database (LCDB). Retrieved 3 May 2016.
  10. ^ 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. 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 22 October 2019.
  11. ^ a b Warner, Brian D. (March 2007). "Asteroid Lightcurve Analysis at the Palmer Divide Observatory - June-September 2006". The Minor Planet Bulletin. 34 (1): 8–10. Bibcode:2007MPBu...34....8W. ISSN 1052-8091. Retrieved 3 May 2016.
  12. ^ a b "6255 Kuma (1994 XT)". Minor Planet Center. Retrieved 3 May 2016.
  13. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 3 May 2016.

External links

  • The Palmer Divide Observatory: Tour given by Brian Warner on YouTube (time 4:03 min.)
  • 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 (5001)-(10000) – Minor Planet Center
  • 6255 Kuma at AstDyS-2, Asteroids—Dynamic Site
    • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
  • 6255 Kuma at the JPL Small-Body Database  
    • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

March 06, 2023
6255, kuma, provisional, designation, 1994, carbonaceous, asteroid, from, central, region, asteroid, belt, approximately, kilometers, diameter, discovered, december, 1994, japanese, astronomer, akimasa, nakamura, kuma, kogen, astronomical, observatory, island,. 6255 Kuma provisional designation 1994 XT is a carbonaceous asteroid from the central region of the asteroid belt approximately 22 kilometers in diameter It was discovered on 5 December 1994 by Japanese astronomer Akimasa Nakamura at Kuma Kogen Astronomical Observatory on the Island of Shikoku Japan 12 It was named after the Japanese town of Kumakōgen 2 6255 KumaDiscovery 1 Discovered byA NakamuraDiscovery siteKuma Kogen Obs Discovery date5 December 1994DesignationsMPC designation 6255 KumaNamed afterKuma Ehime Japanese town 2 Alternative designations1994 XT 1975 VJ8 1981 DV3 1986 EB2 1988 SU4 1989 WP3 1992 OL1Minor planet categorymain belt middle Orbital characteristics 1 Epoch 4 September 2017 JD 2458000 5 Uncertainty parameter 0Observation arc41 37 yr 15 110 days Aphelion2 8302 AUPerihelion2 6527 AUSemi major axis2 7414 AUEccentricity0 0324Orbital period sidereal 4 54 yr 1 658 days Mean anomaly37 407 Mean motion0 13m 1 56s dayInclination5 1205 Longitude of ascending node275 38 Argument of perihelion193 11 Physical characteristicsDimensions15 53 3 67 km 3 15 74 5 52 km 4 16 955 0 135 km 5 6 17 86 0 52 km 7 21 50 9 05 km 8 22 67 km derived 9 22 72 1 7 km IRAS 3 10 Synodic rotation period9 70 0 01 h 11 a Geometric albedo0 0238 derived 9 0 029 0 029 8 0 0342 0 006 IRAS 3 10 0 04 0 03 4 0 058 0 004 7 0 060 0 001 3 5 6 Spectral typeC 9 Absolute magnitude H 12 5 5 7 10 12 80 3 8 12 9 1 9 13 09 4 Contents 1 Classification and orbit 2 Physical characteristics 2 1 Rotation period 2 2 Diameter and albedo 3 Naming 4 Notes 5 References 6 External linksClassification and orbit EditKuma is a dark asteroid that orbits the Sun in the central main belt at a distance of 2 7 2 8 AU once every 4 years and 6 months 1 658 days Its orbit has an eccentricity of 0 03 and an inclination of 5 with respect to the ecliptic 1 The first precovery was taken at Crimea Nauchnij in 1975 extending the asteroid s observation arc by 19 years prior to its discovery 12 Physical characteristics EditKuma is an assumed carbonaceous C type asteroid 9 Rotation period Edit In September 2006 a rotational lightcurve of Kuma was obtained from photometric observations by American astronomer Brian Warner at the Palmer Divide Observatory 716 in Colorado Lightcurve analysis gave a rotation period of 9 70 hours with a brightness amplitude of 0 15 magnitude U 2 11 a Diameter and albedo Edit According to the space based surveys carried out by the Infrared Astronomical Satellite IRAS the Japanese Akari satellite and NASA s Wide field Infrared Survey Explorer with its NEOWISE mission Kuma measures between 15 53 and 22 72 kilometers in diameter and its surface has a low albedo in the range of 0 029 to 0 06 3 4 5 7 8 10 The Collaborative Asteroid Lightcurve Link derives an even lower albedo of 0 02 and a diameter of 22 7 kilometers using an absolute magnitude of 12 9 9 Naming EditThis minor planet was named after the Japanese rural town Kuma now Kumakōgen Ehime home of the discovering observatory that was built in 1992 for astronomical education and tourism Kuma is located on the Japanese island of Shikoku after which the minor planet 4223 Shikoku is named The town supports local cultural activities and is a significant destination for pilgrims 2 The approved naming citation was published by the Minor Planet Center on 14 May 1995 M P C 25231 13 Notes Edit a b Lightcurve plot of 6255 Kuma Palmer Divide Observatory B D Warner 2006 Summary figures at Collaborative Asteroid Lightcurve Link CALL References Edit a b c d JPL Small Body Database Browser 6255 Kuma 1994 XT 2017 03 21 last obs Jet Propulsion Laboratory Retrieved 4 July 2017 a b c Schmadel Lutz D 2007 6255 Kuma Dictionary of Minor Planet Names 6255 Kuma Springer Berlin Heidelberg p 521 doi 10 1007 978 3 540 29925 7 5754 ISBN 978 3 540 00238 3 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 Retrieved 4 July 2017 a b c d Nugent C R Mainzer A Bauer J Cutri R M Kramer E A Grav T et al September 2016 NEOWISE Reactivation Mission Year Two Asteroid Diameters and Albedos The Astronomical Journal 152 3 12 arXiv 1606 08923 Bibcode 2016AJ 152 63N doi 10 3847 0004 6256 152 3 63 Retrieved 4 July 2017 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 Retrieved 3 May 2016 a b Masiero Joseph R Mainzer A K Grav T Bauer J M Cutri R M Dailey J et al November 2011 Main Belt Asteroids with WISE NEOWISE I Preliminary Albedos and Diameters The Astrophysical Journal 741 2 20 arXiv 1109 4096 Bibcode 2011ApJ 741 68M doi 10 1088 0004 637X 741 2 68 Retrieved 5 December 2016 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 Masiero Joseph R Mainzer A K Grav T Bauer J M Cutri R M Nugent C et al November 2012 Preliminary Analysis of WISE NEOWISE 3 Band Cryogenic and Post cryogenic Observations of Main Belt Asteroids The Astrophysical Journal Letters 759 1 5 arXiv 1209 5794 Bibcode 2012ApJ 759L 8M doi 10 1088 2041 8205 759 1 L8 Retrieved 3 May 2016 a b c d e f LCDB Data for 6255 Kuma Asteroid Lightcurve Database LCDB Retrieved 3 May 2016 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 12 IRAS A FPA 3 RDR IMPS V6 0 Bibcode 2004PDSS 12 T Retrieved 22 October 2019 a b Warner Brian D March 2007 Asteroid Lightcurve Analysis at the Palmer Divide Observatory June September 2006 The Minor Planet Bulletin 34 1 8 10 Bibcode 2007MPBu 34 8W ISSN 1052 8091 Retrieved 3 May 2016 a b 6255 Kuma 1994 XT Minor Planet Center Retrieved 3 May 2016 MPC MPO MPS Archive Minor Planet Center Retrieved 3 May 2016 External links EditThe Palmer Divide Observatory Tour given by Brian Warner on YouTube time 4 03 min Asteroid 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 5001 10000 Minor Planet Center 6255 Kuma at AstDyS 2 Asteroids Dynamic Site Ephemeris Observation prediction Orbital info Proper elements Observational info 6255 Kuma 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 6255 Kuma amp oldid 1123253344, wikipedia, wiki, book, books, library,

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