1088 Mitaka

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1088 Mitaka
Discovery [1]
Discovered by O. Oikawa
Discovery site Tokyo Astronomical Obs.
Discovery date 17 November 1927
MPC designation (1088) Mitaka
Named after
Mitaka[2] (Japanese village)
1927 WA · 1942 FR
1953 VW3 · 1971 BE
A917 RA
main-belt · (inner)[3]
background [4]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 88.22 yr (32,224 days)
Aphelion 2.6328 AU
Perihelion 1.7722 AU
2.2025 AU
Eccentricity 0.1954
3.27 yr (1,194 days)
0° 18m 5.4s / day
Inclination 7.6514°
Physical characteristics
Dimensions 11.33±2.51 km[5]
13.35±0.75 km[6]
15.137±0.131 km[7]
15.957±0.030 km[8]
16.016 km[9]
16.02 km (taken)[3]
3.027±0.003 h[10]
3.0353±0.0005 h[11]
3.035377 h[12]
3.035378±0.000005 h[13]
3.0354±0.0002 h[14]
3.0361±0.0007 h[14]
3.049±0.005 h[15]
Tholen = S[1]
SMASS = S[1][3]
B–V = 0.947 [1]
U–B = 0.594 [1]
11.39[1][6] · 11.41±0.20[16] · 11.55[5] · 11.62[3][8] · 11.62±0.08[9][15]

1088 Mitaka, provisional designation 1927 WA, is a stony background asteroid from the inner regions of the asteroid belt, approximately 15 kilometers in diameter. It was discovered on 17 November 1927, by Japanese astronomer Okuro Oikawa at the old Tokyo Astronomical Observatory in Japan.[17] The asteroid was named after the Japanese village of Mitaka.[2]

Orbit and classification[edit]

Mitaka is a non-family asteroid of the main belt's background population.[4] It orbits the Sun in the inner asteroid belt at a distance of 1.8–2.6 AU once every 3 years and 3 months (1,194 days). Its orbit has an eccentricity of 0.20 and an inclination of 8° with respect to the ecliptic.[1]

The asteroid was first identified as A917 RA at Simeiz Observatory in September 1917. The body's observation arc begins at Tokyo in December 1927, one month after its official discovery observation.[17]

Physical characteristics[edit]

Mitaka is a common stony S-type asteroid in the Tholen and SMASS classification.[1][3]

Rotation period[edit]

Several rotational lightcurves of Mitaka have been obtained from photometric observations since 1989.[10][11][14][15] Analysis of the best rated lightcurve by French amateur astronomer Pierre Antonini gave a rotation period of 3.0361 hours with a consolidated brightness variation of 0.23 to 0.62 magnitude (U=3).[3][14]

Modeled lightcurves[edit]

In 2009 and 2011, modelling of Mitaka's lightcurve using photometric data from the US Naval Observatory, the Uppsala Asteroid Photometric Catalogue (UAPC), the Palmer Divide Observatory's archive, the Palomar Transient Factory survey, and from individual observers, gave a concurring rotation period of 3.035377 and 3.035378 hours.[12][13] The modeled lightcurves also gave a spin axis of (115.0°, 46.0°) and (278.0°, −72.0°),[12] as well as (280.0°, −71.0°) in ecliptic coordinates (λ, β).[13]

Diameter and albedo[edit]

According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Mitaka measures between 11.33 and 16.016 kilometers in diameter and its surface has an albedo between 0.1549 and 0.37.[5][6][7][8][9]

The Collaborative Asteroid Lightcurve Link adopts Petr Pravec's revised WISE results with an albedo of 0.1549 and takes a diameter of 16.02 kilometers based on an absolute magnitude of 11.62.[3]


This minor planet was named after the Japanese village of Mitaka, where the discovering Tokyo Astronomical Observatory was located. Nowadays the city of Mitaka hosts the headquarters of the National Astronomical Observatory of Japan with the Tokyo Photoelectric Meridian Circle, public relation and data centers, and several telescopes. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 103).[2]


  1. ^ a b c d e f g h i "JPL Small-Body Database Browser: 1088 Mitaka (1927 WA)" (2017-07-05 last obs.). Jet Propulsion Laboratory. Retrieved 27 September 2017. 
  2. ^ a b c Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1088) Mitaka. Springer Berlin Heidelberg. p. 93. ISBN 978-3-540-00238-3. Retrieved 27 September 2017. 
  3. ^ a b c d e f g "LCDB Data for (1088) Mitaka". Asteroid Lightcurve Database (LCDB). Retrieved 27 September 2017. 
  4. ^ a b "Small Bodies Data Ferret". Nesvorny HCM Asteroid Families V3.0. Retrieved 25 September 2017. 
  5. ^ 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:1606.08923Freely accessible. Bibcode:2016AJ....152...63N. doi:10.3847/0004-6256/152/3/63. Retrieved 27 September 2017. 
  6. ^ 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. Retrieved 27 September 2017. 
  7. ^ 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:1406.6645Freely accessible. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 27 September 2017. 
  8. ^ 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" (PDF). The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 27 September 2017. 
  9. ^ a b c d Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus. 221 (1): 365–387. Bibcode:2012Icar..221..365P. doi:10.1016/j.icarus.2012.07.026. Retrieved 27 September 2017. 
  10. ^ a b Macias, Amadeo Aznar (January 2015). "Asteroid Lightcurve Analysis at Isaac Aznar Observatory Aras De Los Olmos, Valencia, Spain". The Minor Planet Bulletin. 42 (1): 4–6. Bibcode:2015MPBu...42....4M. ISSN 1052-8091. Retrieved 27 September 2017. 
  11. ^ a b Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; Ivanova, V.; Apostolovska, G.; et al. (October 2012). "Do Slivan states exist in the Flora family?. I. Photometric survey of the Flora region". Astronomy and Astrophysics. 546: 51. Bibcode:2012A&A...546A..72K. doi:10.1051/0004-6361/201219199. Retrieved 27 September 2017. 
  12. ^ a b c Durech, J.; Kaasalainen, M.; Warner, B. D.; Fauerbach, M.; Marks, S. A.; Fauvaud, S.; et al. (January 2009). "Asteroid models from combined sparse and dense photometric data" (PDF). Astronomy and Astrophysics. 493 (1): 291–297. Bibcode:2009A&A...493..291D. doi:10.1051/0004-6361:200810393. Retrieved 24 August 2017. 
  13. ^ a b c Hanus, J.; Durech, J.; Broz, M.; Warner, B. D.; Pilcher, F.; Stephens, R.; et al. (June 2011). "A study of asteroid pole-latitude distribution based on an extended set of shape models derived by the lightcurve inversion method". Astronomy & Astrophysics. 530: 16. arXiv:1104.4114Freely accessible. Bibcode:2011A&A...530A.134H. doi:10.1051/0004-6361/201116738. Retrieved 27 September 2017. 
  14. ^ a b c d Behrend, Raoul. "Asteroids and comets rotation curves – (1088) Mitaka". Geneva Observatory. Retrieved 27 September 2017. 
  15. ^ a b c Wisniewski, W. Z.; Michalowski, T. M.; Harris, A. W.; McMillan, R. S. (March 1995). "Photoelectric Observations of 125 Asteroids". Abstracts of the Lunar and Planetary Science Conference. Bibcode:1995LPI....26.1511W. Retrieved 27 September 2017. 
  16. ^ 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. arXiv:1506.00762Freely accessible. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 27 September 2017. 
  17. ^ a b "1088 Mitaka (1927 WA)". Minor Planet Center. Retrieved 27 September 2017. 

External links[edit]