1176 Lucidor

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1176 Lucidor
Discovery [1]
Discovered by E. Delporte
Discovery site Uccle Obs.
Discovery date 15 November 1930
MPC designation (1176) Lucidor
Named after
Lucidor (discoverer's friend and amateur astronomer)[2]
1930 VE · 1927 BF
1971 BD2
main-belt · (middle)[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 86.61 yr (31,633 days)
Aphelion 3.0768 AU
Perihelion 2.3054 AU
2.6911 AU
Eccentricity 0.1433
4.41 yr (1,613 days)
0° 13m 23.88s / day
Inclination 6.6465°
Physical characteristics
Dimensions 17.489±0.528 km[4]
17.49±0.53 km[4]
18.62±0.20 km[5]
30.59 km (derived)[3]
30.65±0.8 km[6]
31.32±12.82 km[7]
31.48±0.53 km[8]
4.075±0.001 h[9]
4.0791±0.0006 h[10][a]
0.0544 (derived)[3]
SMASS = C[1] · C[3]
10.90[6][8] · 11.11±0.42[11] · 11.35[3] · 11.35±0.04[12] · 11.40[1][4][5][7]

1176 Lucidor, provisional designation 1930 VE, is a carbonaceous background asteroid from the central region of the asteroid belt, approximately 30 kilometers in diameter. It was discovered by Eugène Delporte in 1930, who named it after a friend.


Lucidor was discovered on 15 November 1930, by Belgian astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle. On the same day, it was independently discovered by Max Wolf at the Heidelberg Observatory in Germany, and 15 days later by Grigory Neujmin at Simeiz Observatory in Crimea.[13] The body's observation arc begins with its identification as 1927 BF at the Tokyo Astronomical Observatory (389) in January 1927, nearly 4 years prior to its official discovery observation at Uccle.[13]

Orbit and classification[edit]

Lucidor has not been grouped to any known asteroid family. It orbits the Sun in the central main belt at a distance of 2.3–3.1 AU once every 4 years and 5 months (1,613 days). Its orbit has an eccentricity of 0.14 and an inclination of 7° with respect to the ecliptic.[1]

Physical characteristics[edit]

In the SMASS classification, Lucidor is a carbonaceous C-type asteroid.[1]

Rotation period[edit]

In November 2005, two rotational lightcurves of Lucidor were independently obtained from photometric observations by Brian Warner at his Palmer Divide Observatory (716) in Colorado as well as by René Roy at Blauvac, France (627), and Federico Manzini and Roberto Crippa at Sozzago in Italy (A12). Lightcurve analysis gave a well-defined rotation period of 4.075 and 4.0791 hours with a low brightness amplitude of 0.05 and 0.06 magnitude, respectively (U=3/3).[9][10][a] A low brightness variation typically indicates that the body has a spheroidal rather than an irregular shape.

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, Lucidor measures between 17.489 and 31.48 kilometers in diameter and its surface has an albedo between 0.04 and 0.159.[4][5][6][7][8]

The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0544 and a diameter of 30.59 kilometers based on an absolute magnitude of 11.35.[3]


This minor planet was named after an amateur astronomer and friend of the discoverer. "Lucidor" is a female name. Her full name has not been published. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 109).[2]


  1. ^ a b Lightcurve plot of 1176 Lucidor, Palmer Divide Observatory, Brian D. Warner (2005), with a rotation period 4.0791±0.0006 hours with a brightness amplitude of 0.06±0.02 mag.


  1. ^ a b c d e f "JPL Small-Body Database Browser: 1176 Lucidor (1930 VE)" (2017-06-24 last obs.). Jet Propulsion Laboratory. Retrieved 26 August 2017. 
  2. ^ a b Schmadel, Lutz D. (2007). "(1176) Lucidor". Dictionary of Minor Planet Names – (1176) Lucidor. Springer Berlin Heidelberg. p. 99. doi:10.1007/978-3-540-29925-7_1177. ISBN 978-3-540-00238-3. Retrieved 26 August 2017. 
  3. ^ a b c d e f "LCDB Data for (1176) Lucidor". Asteroid Lightcurve Database (LCDB). Retrieved 26 August 2017. 
  4. ^ a b c d e 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:1209.5794Freely accessible. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 26 August 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 26 August 2017. 
  6. ^ 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. Bibcode:2004PDSS...12.....T. Retrieved 26 August 2017. 
  7. ^ a b c d e 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:1509.02522Freely accessible. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. Retrieved 26 August 2017. 
  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. Retrieved 26 August 2017. 
  9. ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (1176) Lucidor". Geneva Observatory. Retrieved 26 August 2017. 
  10. ^ a b Warner, Brian D. (June 2006). "Analysis of 13 asteroid lightcurves obtained at the Palmer Divide Observatory". The Minor Planet Bulletin. 33 (2): 39–41. Bibcode:2006MPBu...33...39W. ISSN 1052-8091. Retrieved 26 August 2017. 
  11. ^ 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 26 August 2017. 
  12. ^ Dymock, Roger (April 2010). "Absolute Magnitudes of Asteroids 1176 Lucidor and 2093 Genichesk". The Minor Planet Bulletin. 37 (2): 56. Bibcode:2010MPBu...37...56D. ISSN 1052-8091. Retrieved 26 August 2017. 
  13. ^ a b "1176 Lucidor (1930 VE)". Minor Planet Center. Retrieved 26 August 2017. 

External links[edit]