19982 Barbaradoore
| Discovery [1] | |
|---|---|
| Discovered by | E. F. Helin |
| Discovery site | Palomar Obs. |
| Discovery date | 22 January 1990 |
| Designations | |
| 19982 Barbaradoore | |
Named after | Barbara Doore (discoverer's family)[2] |
| 1990 BJ · 1983 AD2 | |
| main-belt · Mars crosser [3] | |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 33.26 yr (12,150 days) |
| Aphelion | 3.0034 AU |
| Perihelion | 1.6662 AU |
| 2.3348 AU | |
| Eccentricity | 0.2863 |
| 3.57 yr (1,303 days) | |
| 196.54° | |
| 0° 16m 34.32s / day | |
| Inclination | 22.323° |
| 290.03° | |
| 106.86° | |
| Physical characteristics | |
| Dimensions | 4.668±0.120 km[4] 5.02±0.14 km[5] 5.66 km (calculated)[3] |
| 3.3162±0.0003 h[a] | |
| 0.3540±0.0784[4] 0.306±0.040[5] 0.20 (assumed)[3] | |
| S [3] | |
| 13.6[1][3] 13.4[4][5] 13.13±0.47[6] | |
19982 Barbaradoore, provisional designation 1990 BJ, is an eccentric, stony asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered by American female astronomer Eleanor Helin at the U.S. Palomar Observatory, California, on 22 January 1990.[7]
The S-type asteroid orbits the Sun at a distance of 1.7–3.0 AU once every 3 years and 7 months (1,304 days). Its orbit has an eccentricity of 0.29 and an inclination of 22° with respect to the ecliptic.[1] The Collaborative Asteroid Lightcurve Link (CALL) also classifies it as a Mars-crossing asteroid, because its perihelion lies between 1.3 and 1.668 AU (with no rounding),[8] while the MPC and JPL's database exclusively classifies the body as a main-belt and not as a Mars-crosser, since its perihelion of 1.6685 AU is larger than the aphelion of Mars (1.666 AU).[1] By these standards, the body does not even classify for an outer Mars grazer.
A photometric light-curve analysis by Czech astronomer Petr Pravec at Ondřejov Observatory in 2010, rendered a well-defined rotation period of 3.3162±0.0003 hours with a brightness amplitude of 0.28 in magnitude (U=3).[a] According to the surveys carried out by NASA's Wide-field Infrared Survey Explorer and its subsequent NEOWISE mission, the asteroid has a high albedo of 0.35 and 0.31 with a corresponding diameter of 5.0 and 5.7 kilometers, respectively,[4][5] while CALL assumes an albedo of 0.20, which is a more typical value for stony asteroids, and calculates a diameter of 4.7 kilometers.[3]
The minor planet was named after a cousin of the discoverer, Barbara Hendricks Doore (b. 1933). She is described by the discoverer as an admirer of sports and as an appreciated leader and volunteer, who has dedicated much of her time at Cathedral City's Boys and Girls Club in California.[2] Naming citation was published on 24 June 2002 (M.P.C. 46012).[9]
References
- ^ a b Pravec (2010): rotation period 3.3162±0.0003 hours with a brightness amplitude of 0.28 mag. CALL assigns a quality-code of Q=3, which denotes a "secure result within the precision given and no ambiguity". Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (19982) Barbaradoore and Ondrejov Asteroid Photometry Project – Pravec, P.; Wolf, M.; Sarounova, L. (2010)
- ^ a b c d e "JPL Small-Body Database Browser: 19982 Barbaradoore (1990 BJ)" (2016-04-16 last obs.). Jet Propulsion Laboratory. Retrieved April 2016.
{{cite web}}: Check date values in:|accessdate=(help) - ^ a b Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (19982) Barbaradoore. Springer Berlin Heidelberg. p. 860. ISBN 978-3-540-00238-3. Retrieved April 2016.
{{cite book}}: Check date values in:|accessdate=(help) - ^ a b c d e f "LCDB Data for (19982) Barbaradoore". Asteroid Lightcurve Database (LCDB). Retrieved April 2016.
{{cite web}}: Check date values in:|accessdate=(help) - ^ 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. Retrieved January 2016.
{{cite journal}}: Check date values in:|access-date=(help) - ^ 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 January 2016.
{{cite journal}}: Check date values in:|access-date=(help) - ^ 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 April 2016.
{{cite journal}}: Check date values in:|access-date=(help) - ^ "19982 Barbaradoore (1990 BJ)". Minor Planet Center. Retrieved April 2016.
{{cite web}}: Check date values in:|accessdate=(help) - ^ "LCDB readme – 2. Taxonomic Class, orbital class, and albedo". Asteroid Lightcurve Database (LCDB). Retrieved January 2016.
{{cite web}}: Check date values in:|accessdate=(help) - ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved April 2016.
{{cite web}}: Check date values in:|accessdate=(help)
External links
- Pravec, P.; Wolf, M.; Sarounova, L. (2010)
- 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 (15001)-(20000) – Minor Planet Center
- 19982 Barbaradoore at the JPL Small-Body Database
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