1262 Sniadeckia, provisional designation 1933 FE, is a carbonaceous background asteroid from the outer regions of the asteroid belt, approximately 54 kilometers in diameter. It was discovered on 23 March 1933, by Belgian astronomer Sylvain Arend at the Royal Observatory of Belgium in Uccle.[15] The asteroid was named for Polish astronomer Jan Śniadecki.[2] It has a notably low eccentricity of only 0.005.[1]

1262 Sniadeckia
Discovery [1]
Discovered byS. Arend
Discovery siteUccle Obs.
Discovery date23 March 1933
MPC designation(1262) Sniadeckia
Named after
Jan Śniadecki[2]
(Polish astronomer)
1933 FE · 1949 JJ
2016 FS5 · A907 GU
main-belt · (outer)[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc110.47 yr (40,350 days)
Aphelion3.0167 AU
Perihelion2.9870 AU
3.0019 AU
5.20 yr (1,900 days)
0° 11m 22.2s / day
Physical characteristics
Dimensions51.34±15.63 km[5]
51.49±6.2 km[6]
51.55 km (derived)[3]
53.54±11.23 km[7]
58.196±1.233 km[8]
59.092±19.02 km[9]
59.49±0.82 km[10]
71.011±0.457 km[11]
17.57 h[12]
21.2±0.1 h[13]
0.0563 (derived)[3]
SMASS = C[1][3]
B–V = 0.740[1]
U–B = 0.380[1]
10.18[3][8][12] · 10.25[1][5][6][7][9][10][11] · 10.30±0.30[14]

Orbit and classificationEdit

Sniadeckia is a non-family asteroid from the main belt's background population.[4] It orbits the Sun in the outer asteroid belt at a distance of 2.99–3.00 AU once every 5 years and 2 months (1,900 days; semi-major axis of 3.00 AU). Its orbit has an eccentricity of only 0.005 and an inclination of 13° with respect to the ecliptic.[1]

The asteroid was first identified as A907 GU at Heidelberg Observatory in April 1907. The body's observation arc begins with its official discovery observation at Uccle in 1933.[15]

Physical characteristicsEdit

In the SMASS classification, Sniadeckia is a carbonaceous C-type asteroid.[1][3]

Rotation periodEdit

In January 1984, the first and best-rated rotational lightcurve of Sniadeckia was obtained from photometric observations by astronomer Richard Binzel. Lightcurve analysis gave a rotation period of 17.57 hours with a brightness variation of 0.16 magnitude (U=3).[12] French amateur astronomer Laurent Bernasconi measured an alternative period of 21.2 with an amplitude of 0.10 magnitude in April 2006 (U=2).[13]

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, Sniadeckia measures between 51.34 and 71.011 kilometers in diameter and its surface has an albedo between 0.028 and 0.0529.[5][6][7][8][9][10][11]

The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0563 and a diameter of 51.55 kilometers based on an absolute magnitude of 10.18.[3]


This minor planet was named by Tadeusz Banachiewicz after Jan Śniadecki (1756–1830), a Polish professor of mathematics and astronomy, who founded the Kraków Observatory (055). The lunar crater Sniadecki is also named in his honor. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 116).[2]


  1. ^ a b c d e f g h i "JPL Small-Body Database Browser: 1262 Sniadeckia (1933 FE)" (2017-09-30 last obs.). Jet Propulsion Laboratory. Retrieved 28 November 2017.
  2. ^ a b c Schmadel, Lutz D. (2007). "(1262) Sniadeckia". Dictionary of Minor Planet Names – (1262) Sniadeckia. Springer Berlin Heidelberg. p. 104. doi:10.1007/978-3-540-29925-7_1263. ISBN 978-3-540-00238-3.
  3. ^ a b c d e f g "LCDB Data for (1262) Sniadeckia". Asteroid Lightcurve Database (LCDB). Retrieved 28 November 2017.
  4. ^ a b "Asteroid 1262 Sniadeckia – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 29 October 2019.
  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:1606.08923. Bibcode:2016AJ....152...63N. doi:10.3847/0004-6256/152/3/63. Retrieved 28 November 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: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 22 October 2019.
  7. ^ a b c d 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:1509.02522. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. Retrieved 28 November 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". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90.
  9. ^ 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". The Astronomical Journal. 154 (4): 10. arXiv:1708.09504. Bibcode:2017AJ....154..168M. doi:10.3847/1538-3881/aa89ec.
  10. ^ 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)
  11. ^ 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 28 November 2017.
  12. ^ 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 28 November 2017.
  13. ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (1262) Sniadeckia". Geneva Observatory. Retrieved 28 November 2017.
  14. ^ 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 28 November 2017.
  15. ^ a b "1262 Sniadeckia (1933 FE)". Minor Planet Center. Retrieved 28 November 2017.

External linksEdit