1301 Yvonne

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1301 Yvonne
1301Yvonne (Lightcurve Inversion).png
Lightcurve-based 3D-model of Yvonne
Discovery [1]
Discovered by L. Boyer
Discovery site Algiers Obs.
Discovery date 7 March 1934
MPC designation (1301) Yvonne
Named after
Yvonne Boyer [2]
(discoverer's sister)
1934 EA
main-belt · (outer)[3]
background [4]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 83.32 yr (30,433 days)
Aphelion 3.5134 AU
Perihelion 2.0225 AU
2.7680 AU
Eccentricity 0.2693
4.61 yr (1,682 days)
0° 12m 50.4s / day
Inclination 34.030°
Physical characteristics
Dimensions 18.693±4.943 km[5]
20.44±5.24 km[6]
21.438±0.088 km[7]
21.54±0.25 km[8]
21.681±0.204 km[9]
21.95±0.41 km[10]
22.50 km (derived)[3]
22.77±2.4 km[11]
7.2536±0.0002 h[12]
7.3196±0.0001 h[12]
7.31968±0.00005 h[13]
7.3200±0.0001 h[14]
7.320±0.005 h[15]
0.1054 (derived)[3]
SMASS = C[1][3] · C[16]
10.80[8][9][11] · 11.30[1][3][5][10] · 11.32[6] · 11.40±0.22[16]

1301 Yvonne, provisional designation 1934 EA, is a carbonaceous asteroid from the background population of the intermediate asteroid belt, approximately 21 kilometers in diameter. It was discovered on 7 March 1934, by French astronomer Louis Boyer at the Algiers Observatory in North Africa.[17] The asteroid was named for the discoverer's siter, Yvonne Boyer

Orbit and classification[edit]

Yvonne is a non-family background asteroid.[4] It orbits the Sun in the central main-belt at a distance of 2.0–3.5 AU once every 4 years and 7 months (1,682 days; semi-major axis of 2.77 AU). Its orbit has an eccentricity of 0.27 and an inclination of 34° with respect to the ecliptic.[1] The body's observation arc begins with its official discovery observation at Algiers in March 1934.[17]

Physical characteristics[edit]

In the SMASS classification, Yvonne is a carbonaceous C-type asteroid.[1] PanSTARRS photometric survey also characterized the asteroid as a C-type.[16]

Rotation period and pole[edit]

Between 2003 and 2017, four rotational lightcurves of Yvonne have been obtained from photometric observations.[12][14][15] Analysis gave a consolidated rotation period of 7.320 hours with a brightness amplitude between 0.52 and 0.90 magnitude (U=3/3/3/3).[3]

In 2011, a modeled lightcurve using data from the Uppsala Asteroid Photometric Catalogue (UAPC) and other sources gave a concurring period 7.31968 hours, as well as a spin axis of (39.0°, 41.0°) in ecliptic coordinates (λ, β).[13]

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, Yvonne measures between 18.693 and 22.77 kilometers in diameter and its surface has an albedo between 0.10 and 0.201.[5][6][7][8][9][10][11]

The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1054 (which is untypically high for a carbonaceous body) and a diameter of 22.50 kilometers based on an absolute magnitude of 11.3.[3]


This minor planet was named after Yvonne Boyer, sister of discoverer. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 101).[2]


  1. ^ a b c d e f "JPL Small-Body Database Browser: 1301 Yvonne (1934 EA)" (2017-07-02 last obs.). Jet Propulsion Laboratory. Retrieved 11 December 2017. 
  2. ^ a b Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1301) Yvonne. Springer Berlin Heidelberg. p. 107. ISBN 978-3-540-00238-3. Retrieved 11 December 2017. 
  3. ^ a b c d e f g "LCDB Data for (1301) Yvonne". Asteroid Lightcurve Database (LCDB). Retrieved 11 December 2017. 
  4. ^ a b "Small Bodies Data Ferret". Nesvorny HCM Asteroid Families V3.0. Retrieved 11 December 2017. 
  5. ^ a b c d Masiero, Joseph R.; Nugent, C.; Mainzer, A. K.; Wright, E. L.; Bauer, J. M.; Cutri, R. M.; et al. (October 2017). "NEOWISE Reactivation Mission Year Three: Asteroid Diameters and Albedos" (PDF). The Astronomical Journal. 154 (4): 10. arXiv:1708.09504Freely accessible. Bibcode:2017AJ....154..168M. doi:10.3847/1538-3881/aa89ec. Retrieved 11 December 2017. 
  6. ^ 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 11 December 2017. 
  7. ^ a b 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" (PDF). The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645Freely accessible. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 11 December 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 11 December 2017. 
  9. ^ 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 11 December 2017. 
  10. ^ a b c d 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 11 December 2017. 
  11. ^ 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 11 December 2017. 
  12. ^ a b c Behrend, Raoul. "Asteroids and comets rotation curves – (1301) Yvonne". Geneva Observatory. Retrieved 11 December 2017. 
  13. ^ a b 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 11 December 2017. 
  14. ^ a b Oey, Julian; Vilagi, J.; Gajdos, S.; Kornos, L.; Galad, A. (September 2007). "Light curve Analysis of 8 Asteroids from Leura and Other Collaborating Observatories". The Minor Planet Bulletin. 34 (3): 81–83. Bibcode:2007MPBu...34...81O. ISSN 1052-8091. Retrieved 11 December 2017. 
  15. ^ a b Pray, Donald P. (March 2004). "Lightcurve analysis of asteroids 1225, 1301, 2134, 2741, and 3974". The Minor Planet Bulletin. 31 (1): 6–8. Bibcode:2004MPBu...31....6P. ISSN 1052-8091. Retrieved 11 December 2017. 
  16. ^ a b c 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 11 December 2017. 
  17. ^ a b "1301 Yvonne (1934 EA)". Minor Planet Center. Retrieved 11 December 2017. 

External links[edit]