1350 Rosselia

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1350 Rosselia
Discovery [1]
Discovered by E. Delporte
Discovery site Uccle Obs.
Discovery date 3 October 1934
MPC designation (1350) Rosselia
Named after
Marie-Thérèse Rossel[2]
(editor of Le Soir)
1934 TA · 1926 AF
1929 TN · 1929 VH
1934 VA · 1938 OC
1948 QG · 1949 YY
A924 TB
main-belt · (outer)
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 88.09 yr (32,176 days)
Aphelion 3.1133 AU
Perihelion 2.6007 AU
2.8570 AU
Eccentricity 0.0897
4.83 yr (1,764 days)
0° 12m 14.76s / day
Inclination 2.9392°
Physical characteristics
Dimensions 20.822±0.185 km[5]
21.083±0.147 km[6]
21.22±0.38 km[7]
22.60±3.16 km[8]
23.35±1.7 km[3][9]
6.0 h[10]
8.1394±0.0002 h[11]
8.140±0.001 h[11][12]
8.14±0.05 h[11]
8.14008±0.00001 h[13]
8.14011±0.00005 h[14]
8.16±0.01 h[15]
Tholen = S[1]
SMASS = Sa [1]
B–V = 0.854 [1]
U–B = 0.373 [1]
10.36±0.25 (R)[15] · 10.67±0.06[16] · 10.68[8] · 10.78[1][3][6][7][9] · 10.81±0.01[12]

1350 Rosselia, provisional designation 1934 TA, is a stony Koronian asteroid from the outer regions of the asteroid belt, approximately 22 kilometers in diameter. Discovered by astronomer Eugène Delporte at the Royal Observatory of Belgium in 1934,[17] the asteroid was later named after Marie-Thérèse Rossel, editor of the Belgian newspaper Le Soir.[2]


Rosselia was discovered on 3 October 1934, by Belgian astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle.[17] One month later, it was independently discovered by German astronomer Richard Schorr at the Bergedorf Observatory, Hamburg, on 3 November 1934.[2] The Minor Planet Center only recognizes the first discoverer. The asteroid was first identified as A924 TB at the Simeiz Observatory in October 1924.[17]

Orbit and classification[edit]

Rosselia is a member of the Koronis family (605),[3][4] a very large asteroid family with nearly co-planar ecliptical orbits in the outer main belt.[18] It orbits the Sun at a distance of 2.6–3.1 AU once every 4 years and 10 months (1,764 days; semi-major axis of 2.86 AU). Its orbit has an eccentricity of 0.09 and an inclination of 3° with respect to the ecliptic.[1]

The body's observation arc begins at Lowell Observatory in September 1929, or five years prior to its official discovery observation at Uccle.[17]

Physical characteristics[edit]

In the Tholen classification, Rosselia is a common S-type asteroid.[1] In the SMASS classification it is an Sa-subtype that transitions to the rare A-type asteroids.[1]

Rotation period and poles[edit]

Several rotational lightcurve of Rosselia have been obtained from photometric observations since 1975.[10][11][12][15] Consolidated lightcurve-analysis gave a well-defined rotation period of 8.140 hours with a brightness amplitude between 0.3 and 0.54 magnitude (U=3).[3]

Modeling of the asteroid's lightcurve gave two concurring periods of 8.14008 and 8.14011 hours,[13][14] with two determined spin axis of (67.0°, −64.0°) and (246.0°, −58.0°) 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, Rosselia measures between 20.822 and 23.35 kilometers in diameter and its surface has an albedo between 0.1579 and 0.199.[5][6][7][8][9]

The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.1579 and a diameter of 23.35 kilometers based on an absolute magnitude of 10.78.[3][9]


This minor planet was named after Marie-Thérèse Rossel (1910–1987), a Belgian businesswoman and editor of the Brussels newspaper Le Soir.[2] The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 122).[2] Asteroid 1366 Piccolo was also named after an editor of Le Soir by Delporte.


  1. ^ a b c d e f g h i j "JPL Small-Body Database Browser: 1350 Rosselia (1934 TA)" (2017-11-02 last obs.). Jet Propulsion Laboratory. Retrieved 15 November 2017. 
  2. ^ a b c d e Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1350) Rosselia. Springer Berlin Heidelberg. p. 110. ISBN 978-3-540-00238-3. Retrieved 15 November 2017. 
  3. ^ a b c d e f g "LCDB Data for (1350) Rosselia". Asteroid Lightcurve Database (LCDB). Retrieved 15 November 2017. 
  4. ^ a b "Small Bodies Data Ferret". Nesvorny HCM Asteroid Families V3.0. Retrieved 15 November 2017. 
  5. ^ a b c Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096Freely accessible. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 15 November 2017. 
  6. ^ 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 15 November 2017. 
  7. ^ 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 15 November 2017. 
  8. ^ 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 15 November 2017. 
  9. ^ a b c d e 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. Archived from the original on 2016-06-03. Retrieved 15 November 2017. 
  10. ^ a b Lagerkvist, C.-I. (March 1978). "Photographic photometry of 110 main-belt asteroids". Astronomy and Astrophysics Supplement Series: 361–381. Bibcode:1978A&AS...31..361L. Retrieved 15 November 2017. 
  11. ^ a b c d Behrend, Raoul. "Asteroids and comets rotation curves – (1350) Rosselia". Geneva Observatory. Retrieved 15 November 2017. 
  12. ^ a b c Slivan, Stephen M.; Binzel, Richard P.; Boroumand, Shaida C.; Pan, Margaret W.; Simpson, Christine M.; Tanabe, James T.; et al. (May 2008). "Rotation rates in the Koronis family, complete to H≈11.2". Icarus. 195 (1): 226–276. Bibcode:2008Icar..195..226S. doi:10.1016/j.icarus.2007.11.019. Retrieved 15 November 2017. 
  13. ^ a b c Durech, J.; Hanus, J.; Oszkiewicz, D.; Vanco, R. (March 2016). "Asteroid models from the Lowell photometric database". Astronomy and Astrophysics. 587: 6. arXiv:1601.02909Freely accessible. Bibcode:2016A&A...587A..48D. doi:10.1051/0004-6361/201527573. Retrieved 15 November 2017. 
  14. ^ 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 15 November 2017. 
  15. ^ a b c Chang, Chan-Kao; Ip, Wing-Huen; Lin, Hsing-Wen; Cheng, Yu-Chi; Ngeow, Chow-Choong; Yang, Ting-Chang; et al. (June 2014). "313 New Asteroid Rotation Periods from Palomar Transient Factory Observations". The Astrophysical Journal. 788 (1): 21. arXiv:1405.1144Freely accessible. Bibcode:2014ApJ...788...17C. doi:10.1088/0004-637X/788/1/17. Retrieved 15 November 2017. 
  16. ^ 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 15 November 2017. 
  17. ^ a b c d "1350 Rosselia (1934 TA)". Minor Planet Center. Retrieved 15 November 2017. 
  18. ^ Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families" (PDF). Asteroids IV: 297–321. arXiv:1502.01628Freely accessible. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. Retrieved 15 November 2017. 

External links[edit]