1167 Dubiago

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1167 Dubiago
Discovery [1]
Discovered by E. F. Skvortsov
Discovery site Simeiz Observatory
Discovery date 3 August 1930
MPC designation 1167 Dubiago
Named after
Alexander Dubyago
(also spelled: Dubiago)[2]
1930 PB · 1931 VJ1
1938 WW · 1950 QX
A924 RF
main-belt (outer)[3]
Orbital characteristics[1]
Epoch 27 June 2015 (JD 2457200.5)
Uncertainty parameter 0
Observation arc 84.99 yr (31,044 days)
Aphelion 3.6670 AU
Perihelion 3.1611 AU
3.4140 AU
Eccentricity 0.0740
6.31 yr (2,304 days)
Inclination 5.7170°
Physical characteristics
Dimensions 63.12 km[4]
75.79±0.90 km[5]
14.3 h[6]
34.8374±0.0990 h[7]
B–V = 0.743
U–B = 0.196
Tholen = D

1167 Dubiago, provisional designation 1930 PB, is a larger asteroid from the outer region of the asteroid belt, approximately 63 kilometers in diameter. It was discovered by Soviet astronomer Evgenii Skvortsov at the Crimean Simeiz Observatory on 3 August 1930.[8]

It orbits the Sun at a distance of 3.2–3.7 AU once every 6 years and 4 months (2,304 days). It has a rotation period of 14.3 hours and a low geometric albedo of 0.036 and 0.051, as measured by the two infrared satellites, Akari and IRAS, respectively.[4][5]

Dubiago belongs to the group of D-type minor planets, of which a total 46 bodies are known, many of them Jupiter trojans or centaurs, with the largest being 10199 Chariklo and 624 Hektor.[9] It is thought that the Martian moon Phobos has a similar composition, and that the Tagish Lake meteorite origins from a D-type asteroid.

The asteroid was named in honor of Alexander Dubyago (1903–1959), an eminent astronomer of the Soviet Union. The lunar crater Dubyago is also named in his and his father's honour.[2]


  1. ^ a b "JPL Small-Body Database Browser: 1167 Dubiago (1930 PB)" (2015-10-17 last obs.). Jet Propulsion Laboratory. Retrieved November 2015. 
  2. ^ a b Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1167) Dubiago. Springer Berlin Heidelberg. p. 98. ISBN 978-3-540-29925-7. Retrieved November 2015. 
  3. ^ "LCDB Data for (1167) Dubiago". Asteroid Lightcurve Database (LCDB). Retrieved November 2015. 
  4. ^ a b c Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. Bibcode:2004PDSS...12.....T. Retrieved November 2015. 
  5. ^ a b c Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; Ishihara, Daisuke; Kataza, Hirokazu; Takita, Satoshi; Oyabu, Shinki; Ueno, Munetaka; Matsuhara, Hideo; Onaka, Takashi (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 November 2015. 
  6. ^ Dahlgren, M.; Lagerkvist, C.-I.; Fitzsimmons, A.; Williams, I. P. (May 1991). "Differential CCD photometry of Dubiago, Chiron and Hektor". Monthly Notices of the Royal Astronomical Society: 115–118. (MNRAS Homepage). Bibcode:1991MNRAS.250..115D. ISSN 0035-8711. Retrieved November 2015. 
  7. ^ Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; Surace, Jason; Cheng, Yu-Chi; Ip, Wing-Huen; Kinoshita, Daisuke; Helou, George; Prince, Thomas A.; Kulkarni, Shrinivas (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal 150 (3): 35. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved November 2015. 
  8. ^ "1167 Dubiago (1930 PB)". Minor Planet Center. Retrieved November 2015. 
  9. ^ "JPL Small-Body Database Search: list of D-type minor planets (Tholen/SMASSII)". Jet Propulsion Laboratory. Retrieved November 2015. 

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