1116 Catriona

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1116 Catriona
Discovery [1]
Discovered by C. Jackson
Discovery site Johannesburg Obs.
Discovery date 5 April 1929
MPC designation (1116) Catriona
Named after
Catriona (novel by
Robert Louis Stevenson)
1929 GD · 1926 RQ
A908 AC
main-belt · (outer)[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 109.01 yr (39,815 days)
Aphelion 3.5946 AU
Perihelion 2.2522 AU
2.9234 AU
Eccentricity 0.2296
5.00 yr (1,826 days)
0° 11m 49.92s / day
Inclination 16.523°
Physical characteristics
Dimensions 36.71±0.53 km[4]
38.741±0.281 km[5]
39.02 km (derived)[3]
39.04 km[6]
39.12±0.7 km[7]
41.010±0.396 km[8]
8.83±0.01 h[9]
8.832 h[a][b]
10.49 h[6]
12.06 h[c]
0.1395 (derived)[3]
9.70[4][7][8] · 9.78[6] · 9.8[1][3] · 10.05±0.26[10]

1116 Catriona, provisional designation 1929 GD, is a carbonaceous asteroid from the outer regions of the asteroid belt, approximately 39 kilometers in diameter. It was discovered on 5 April 1929, by South African astronomer Cyril Jackson at the Union Observatory in Johannesburg.[11] The asteroid was probably named after the 1893-novel Catriona by Robert Louis Stevenson.[2]

Classification and orbit[edit]

Catriona is not a member of any identified asteroid family. It orbits the Sun in the outer main belt at a distance of 2.3–3.6 AU once every 5.00 years (1,826 days). Its orbit has an eccentricity of 0.23 and an inclination of 17° with respect to the ecliptic.[1] The body's observation arc begins with its official discovery observation at Johannesburg.[11]

Physical characteristics[edit]

Catriona is an assumed carbonaceous C-type asteroid.[3]

Rotation period[edit]

In December 2003, the best-rated rotational lightcurve of Catriona was obtained from photometric observations by American astronomer John Menke at his Menke Observatory in Barnesville, Maryland (no obs. code). Lightcurve analysis gave a well-defined rotation period of 8.83 hours with a notably low brightness variation of 0.09 magnitude, indicative of a spheroidal shape (U=3).[9] Additional photometric observations gave a concurring period of 8.832 hours, while others gave a longer period of 10.49 and 12.06 hours (U=2/2/2/2).[6][a][b][c]

Diameter and albedo[edit]

According to observations by astronomers at the Rozhen Observatory in Bulgaria, as well as 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, Catriona measures between 36.71 and 41.010 kilometers in diameter and its surface has an albedo between 0.1397 and 0.175.[4][5][6][7][8]

The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1395 and a diameter of 39.02 kilometers based on an absolute magnitude of 9.8.[3]


This minor planet was probably named after Catriona, the 1893-novel by Robert Louis Stevenson (1850–1894), who was a Scottish poet, novelist and travel writer.[2] The naming citation is based on Lutz Schmadel's research including feedback from R. Bremer.[2]


  1. ^ a b CALL (2011): anonymous lightcurve submitted to Collaborative Asteroid Lightcurve Link. Rotation period 8.832 hours with a brightness amplitude of 0.10 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL)
  2. ^ a b Menke (2011): rotation period 8.832 hours with a brightness amplitude of 0.10 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL)
  3. ^ a b Denchev (1999; b) web: rotation period 12.06 hours with a brightness amplitude of 0.20 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL)


  1. ^ a b c d "JPL Small-Body Database Browser: 1116 Catriona (1929 GD)" (2017-01-07 last obs.). Jet Propulsion Laboratory. Retrieved 29 August 2017. 
  2. ^ a b c d Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1116) Catriona. Springer Berlin Heidelberg. p. 95. ISBN 978-3-540-00238-3. Retrieved 29 August 2017. 
  3. ^ a b c d e f g "LCDB Data for (1116) Catriona". Asteroid Lightcurve Database (LCDB). Retrieved 29 August 2017. 
  4. ^ 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 29 August 2017. 
  5. ^ 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 29 August 2017. 
  6. ^ a b c d e f Denchev, P. (August 2000). "Photometry of 11 asteroids during their 1998 and 1999 apparitions". Planetary and Space Science. 48 (10): 987–992. Bibcode:2000P&SS...48..987D. doi:10.1016/S0032-0633(00)00067-2. Retrieved 29 August 2017. 
  7. ^ 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. Bibcode:2004PDSS...12.....T. Retrieved 29 August 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 29 August 2017. 
  9. ^ a b Menke, John (December 2005). "Asteroid lightcurve results from Menke Observatory". The Minor Planet Bulletin. 32 (4): 85–88. Bibcode:2005MPBu...32...85M. ISSN 1052-8091. Retrieved 29 August 2017. 
  10. ^ 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 29 August 2017. 
  11. ^ a b "1116 Catriona (1929 GD)". Minor Planet Center. Retrieved 29 August 2017. 

External links[edit]