1434 Margot, provisional designation 1936 FD1, is a stony Eoan asteroid from the outer regions of the asteroid belt, approximately 29 kilometers in diameter. It was discovered on 19 March 1936, by Soviet astronomer Grigory Neujmin at the Simeiz Observatory on the Crimean peninsula.[12] The asteroid was named after Gertrud Margot Görsdorf, a friend of German astronomer of Wilhelm Gliese.[2]

1434 Margot
Discovery [1]
Discovered byG. Neujmin
Discovery siteSimeiz Obs.
Discovery date19 March 1936
MPC designation(1434) Margot
Named after
Gertrud Margot Görsdorf [2]
(friend of Wilhelm Gliese)
1936 FD1 · 1931 GM
1931 HA · 1938 RD
1938 UN · 1988 DU
A906 QA · A922 SD
main-belt · (outer)
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc111.11 yr (40,582 days)
Aphelion3.2158 AU
Perihelion2.8217 AU
3.0187 AU
5.24 yr (1,916 days)
0° 11m 16.44s / day
Physical characteristics
Dimensions27.178±0.303 km[5]
27.20±1.75 km[6]
28.052±0.039 km[7]
29.49 km (derived)[3]
29.65±1.4 km[8]
30.84±0.62 km[9]
8.17 h[10]
0.1106 (derived)[3]
Tholen = S[1][3] · S[11]
B–V = 0.809 [1]
U–B = 0.404 [1]
10.43[1][9][8] · 10.49±0.05[11] · 10.66[10][7][3] · 10.77[6]

Orbit and classificationEdit

Margot is a member the Eos family (606),[3][4] the largest asteroid family of the outer asteroid belt consisting of nearly 10,000 asteroids.[13]:23 It orbits the Sun at a distance of 2.8–3.2 AU once every 5 years and 3 months (1,916 days). Its orbit has an eccentricity of 0.07 and an inclination of 11° with respect to the ecliptic.[1]

The body's observation arc begins at Vienna Observatory in August 1906, when it was first identified as A922 SD, almost 30 years prior to its official discovery observation at Simeiz.[12]

Physical characteristicsEdit

In the Tholen classification, Margot is a common S-type asteroid.[1][3] Pan-STARRS photometric survey also characterizes it as a stony S-type,[11] while the overall spectral type for Eoan asteroids is that of a K-type.[13]:23

Rotation periodEdit

In June 1984, a rotational lightcurve of Margot was obtained from photometric observations by American astronomer Richard Binzel . Lightcurve analysis gave a well-defined rotation period of 8.17 hours with a brightness amplitude of 0.52 magnitude, indicative of a somewhat elongated shape (U=3).[10]

Diameter and albedoEdit

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, Margot measures between 27.178 and 30.84 kilometers in diameter and its surface has an albedo between 0.117 and 0.1353.[5][6][7][8][9]

The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1106 and a diameter of 29.49 kilometers based on an absolute magnitude of 10.66.[3]


This minor planet was named by German astronomer Wilhelm Gliese after Gertrud Margot Zottmann (1915–1990; née Görsdorf), his friend and schoolfellow for several years at Berlin. Gliese, after whom the asteroid (1823) is named, is best known for the Gliese Catalogue of Nearby Stars, which is itself the source of name for many discovered exoplanets.[2] The discovery circumstances and naming were researched by Lutz Schmadel, the author of the Dictionary of Minor Planet Names.[2]


  1. ^ a b c d e f g h "JPL Small-Body Database Browser: 1434 Margot (1936 FD1)" (2017-09-30 last obs.). Jet Propulsion Laboratory. Retrieved 24 October 2017.
  2. ^ a b c d Schmadel, Lutz D. (2007). "(1434) Margot". Dictionary of Minor Planet Names – (1434) Margot. Springer Berlin Heidelberg. p. 115. doi:10.1007/978-3-540-29925-7_1435. ISBN 978-3-540-00238-3.
  3. ^ a b c d e f g h "LCDB Data for (1434) Margot". Asteroid Lightcurve Database (LCDB). Retrieved 24 October 2017.
  4. ^ a b "Asteroid 1434 Margot – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 26 October 2019.
  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:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 24 October 2017.
  6. ^ 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:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 24 October 2017.
  7. ^ 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". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
  8. ^ 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: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 22 October 2019.
  9. ^ 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 17 October 2019. (online, AcuA catalog p. 153)
  10. ^ a b c Binzel, R. P. (October 1987). "A photoelectric survey of 130 asteroids". Icarus. 72 (1): 135–208. Bibcode:1987Icar...72..135B. doi:10.1016/0019-1035(87)90125-4. ISSN 0019-1035. Retrieved 24 October 2017.
  11. ^ 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:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 24 October 2017.
  12. ^ a b "1434 Margot (1936 FD1)". Minor Planet Center. Retrieved 24 October 2017.
  13. ^ a b Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). Identification and Dynamical Properties of Asteroid Families. Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131.

External linksEdit