Astronomy:1156 Kira

From HandWiki
1156 Kira
Discovery[1]
Discovered byK. Reinmuth
Discovery siteHeidelberg Obs.
Discovery date22 February 1928
Designations
(1156) Kira
Named afterunknown[2]
1928 DA · 1935 FY
1938 DA · 1953 RC1
1955 FW1 · 1973 QC2
Minor planet categorymain-belt · (inner)[3]
background[4]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc88.76 yr (32,418 days)
|{{{apsis}}}|helion}}2.3414 AU
|{{{apsis}}}|helion}}2.1329 AU
2.2372 AU
Eccentricity0.0466
Orbital period3.35 yr (1,222 days)
Mean anomaly326.67°
Mean motion0° 17m 40.2s / day
Inclination1.3976°
Longitude of ascending node91.131°
353.76°
Physical characteristics
Dimensions6.83±0.21 km[5]
6.831±0.211 km[5]
8.79±1.97 km[6]
8.856±0.105 km[7]
9.00±2.24 km[8]
10.30 km (calculated)[3]
10.83±0.76 km[9]
Rotation period2.7910±0.0005 h[lower-alpha 1]
2.79103±0.00004 h[10]
2.79105±0.00003 h[10]
2.79113±0.00004 h[10]
Geometric albedo0.165±0.024[9]
0.181±0.052[11]
0.20 (assumed)[3]
0.2490±0.0585[7]
0.26±0.14[6]
0.29±0.12[8]
0.455±0.066[5]
S[3]
Absolute magnitude (H)12.30[1][3][5][8] · 12.40[7][9] · 12.48±0.35[12] · 12.72[6]


1156 Kira, provisional designation 1928 DA, is a stony background asteroid from the inner regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 22 February 1928, by German astronomer Karl Reinmuth at Heidelberg Observatory in southwest Germany.[13] Any reference of its name to a person or occurrence is unknown.[2]

Orbit and classification

Kira is not a member of any known asteroid family and belongs to the main belt's background population.[4] At the present epoch, however, it orbits within the region of the Flora family.[10]

This asteroid orbits the Sun in the inner main-belt at a distance of 2.1–2.3 AU once every 3 years and 4 months (1,222 days). Its orbit has an eccentricity of 0.05 and an inclination of 1° with respect to the ecliptic.[1] The body's observation arc begins with its official discovery observation at Heidelberg.[13]

Physical characteristics

Kira is an assumed stony S-type asteroid.[3]

Rotation period

Several rotational lightcurves of Kira have been obtained from photometric observations since 2007. Lightcurve analysis gave a rotation period between 2.7910 and 2.79113 hours with a brightness variation of 0.20 to 0.26 magnitude ({{{1}}}).[10][lower-alpha 1]

Diameter and albedo

According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Kira measures between 6.83 and 10.83 kilometers in diameter and its surface has an albedo between 0.165 and 0.455.[5][6][7][8][9][11]

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 10.30 kilometers based on an absolute magnitude of 12.3.[3]

Naming

This minor planet was named by astronomer Max Mündler, staff member at Heidelberg Observatory. Any reference of its name to a person or occurrence is unknown.[2]

Unknown meaning

Among the many thousands of named minor planets, Kira is one of 120 asteroids, for which no official naming citation has been published. All of these low-numbered asteroids have numbers between 164 Eva and 1514 Ricouxa and were discovered between 1876 and the 1930s, predominantly by astronomers Auguste Charlois, Johann Palisa, Max Wolf and Karl Reinmuth.[14]

Notes

  1. ↑ 1.0 1.1 Pravec (2012), lightcurve plot of (1156) Kira. Observation: 10 April 2012. Rotation period 2.7910±0.0005 hours with a brightness amplitude of 0.20±0.02 mag. Quality Code of 3. summary figures at Ondrejov Asteroid Photometry Project. Note: figure published at the LCDB contains a typo.

References

  1. ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 1156 Kira (1928 DA)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001156. Retrieved 7 September 2017. 
  2. ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(1156) Kira". Dictionary of Minor Planet Names – (1156) Kira. Springer Berlin Heidelberg. pp. 97–98. doi:10.1007/978-3-540-29925-7_1157. ISBN 978-3-540-00238-3. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 "LCDB Data for (1156) Kira". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1156%7CKira. Retrieved 7 September 2017. 
  4. ↑ 4.0 4.1 "Asteroid 1156 Kira – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1156. 
  5. ↑ 5.0 5.1 5.2 5.3 5.4 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. doi:10.1088/2041-8205/759/1/L8. Bibcode: 2012ApJ...759L...8M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M. Retrieved 7 September 2017. 
  6. ↑ 6.0 6.1 6.2 6.3 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. doi:10.3847/0004-6256/152/3/63. Bibcode: 2016AJ....152...63N. 
  7. ↑ 7.0 7.1 7.2 7.3 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. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M. 
  8. ↑ 8.0 8.1 8.2 8.3 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. doi:10.1088/0004-637X/814/2/117. Bibcode: 2015ApJ...814..117N. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJ...814..117N. Retrieved 7 September 2017. 
  9. ↑ 9.0 9.1 9.2 9.3 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. doi:10.1093/pasj/63.5.1117. Bibcode: 2011PASJ...63.1117U.  (online, AcuA catalog p. 153)
  10. ↑ 10.0 10.1 10.2 10.3 10.4 Dykhuis, Melissa J.; Molnar, Lawrence A.; Gates, Christopher J.; Gonzales, Joshua A.; Huffman, Jared J.; Maat, Aaron R. et al. (March 2016). "Efficient spin sense determination of Flora-region asteroids via the epoch method". Icarus 267: 174–203. doi:10.1016/j.icarus.2015.12.021. Bibcode: 2016Icar..267..174D. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016Icar..267..174D. Retrieved 7 September 2017. 
  11. ↑ 11.0 11.1 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. doi:10.1088/0004-637X/791/2/121. Bibcode: 2014ApJ...791..121M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M. Retrieved 7 September 2017. 
  12. ↑ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus 261: 34–47. doi:10.1016/j.icarus.2015.08.007. Bibcode: 2015Icar..261...34V. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V. Retrieved 7 September 2017. 
  13. ↑ 13.0 13.1 Cite error: Invalid <ref> tag; no text was provided for refs named MPC-object
  14. ↑ Cite error: Invalid <ref> tag; no text was provided for refs named DOMPN-unknown

External links



Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:1156_Kira&oldid=3350179"