1563 Noël
Discovery [1] | |
---|---|
Discovered by | S. Arend |
Discovery site | Uccle Obs. |
Discovery date | 7 March 1943 |
Designations | |
MPC designation | (1563) Noël |
Named after |
Emanuel Arend (discoverer's son)[2] |
1943 EG · 1930 EF | |
main-belt · Flora [3] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 87.06 yr (31,799 days) |
Aphelion | 2.3789 AU |
Perihelion | 2.0037 AU |
2.1913 AU | |
Eccentricity | 0.0856 |
3.24 yr (1,185 days) | |
347.57° | |
0° 18m 13.68s / day | |
Inclination | 5.9829° |
53.649° | |
116.41° | |
Physical characteristics | |
Dimensions |
±0.51 km 7.23[4] 8.98 km (calculated)[3] |
±0.0003 h 3.5483[lower-alpha 1] ±0.0002 h 3.5486[lower-alpha 1] ±0.0001 h 3.5488[lower-alpha 1] ±0.0001 3.5495h[lower-alpha 1] ±0.002 h 3.550[5] | |
0.24 (assumed)[3] ±0.051 0.370[4] | |
SMASS = Sa [1] · S [3] | |
12.4[1][3][4] | |
|
1563 Noël, provisional designation 1943 EG, is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 7 March 1943, by Belgian astronomer Sylvain Arend at the Royal Observatory of Belgium in Uccle, and named after the discoverer's son.[2][6]
Orbit and classification
Noël is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun at a distance of 2.0–2.4 AU once every 3 years and 3 months (1,185 days). Its orbit has an eccentricity of 0.09 and an inclination of 6° with respect to the ecliptic.[1] Noël was first identified as 1930 EF at the Crimean Simeiz Observatory in 1930, extending its observation arc by 13 years prior to its official discovery observation.[6]
Physical characteristics
The S-type asteroid is characterized as a transitional Sa-subtype on the SMASS taxonomic scheme.[1]
Rotation period
Between April 2008 and June 2015, five rotational lightcurves were obtained from photometric observations by Czech astronomer Petr Pravec at the Ondřejov Observatory near Prague. All lightcurves show a well-defined rotation period between 3.548 and 3.550 hours with a brightness variation of 0.15 to 0.18 in magnitude (U=3).[lower-alpha 1]
In April 2008, a photometric observation by astronomer Julian Oey at the Kingsgrove Observatory, Australia, gave a concurring period of ±0.002 hours and an amplitude of 0.14 ( 3.550U=3).[5]
Diameter and albedo
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Noël measures 7.2 kilometers in diameter and its surface has a high albedo of 0.37,[4] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the family's principal body and namesake – and calculates a larger diameter of 9.0 kilometers.[3]
Naming
This minor planet was named in honor of the discoverer's son, Emanuel Arend (H 138).[2]
Notes
- 1 2 3 4 5 Pravec (2008, 2011, 2013, 2015) web: rotation period of ±0.0001, 3.5495±0.0003, 3.5483±0.0001 and 3.5488±0.0002 hours with a brightness amplitude of 3.5486 mag. Summary figures at 0.15Collaborative Asteroid Lightcurve Link (CALL) for (1563) Noel and Pravec, P.; Wolf, M.; Sarounova, L. (2011, 2013, 2015)
References
- 1 2 3 4 5 6 "JPL Small-Body Database Browser: 1563 Noel (1943 EG)" (2017-03-29 last obs.). Jet Propulsion Laboratory. Retrieved 5 June 2017.
- 1 2 3 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1563) Noël. Springer Berlin Heidelberg. p. 124. ISBN 978-3-540-00238-3. Retrieved 19 April 2016.
- 1 2 3 4 5 6 "LCDB Data for (1563) Noel". Asteroid Lightcurve Database (LCDB). Retrieved 18 May 2016.
- 1 2 3 4 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. Bibcode:2012ApJ...759L...8M. arXiv:1209.5794 . doi:10.1088/2041-8205/759/1/L8. Retrieved 18 May 2016.
- 1 2 Oey, Julian (January 2009). "Lightcurve Analysis of Asteroids from Leura and Kingsgrove Observatories in the First Half of 2008". The Minor Planet Bulletin. 36 (1): 4–6. Bibcode:2009MPBu...36....4O. ISSN 1052-8091. Retrieved 19 April 2016.
- 1 2 "1563 Noel (1943 EG)". Minor Planet Center. Retrieved 19 April 2016.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 1563 Noël at the JPL Small-Body Database