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Asteroids with Satellites Database--Johnston's Archive
(1052) Belgica
compiled by Wm. Robert Johnston
last updated21 September 2014--Orbital and physical data--
(Seethis page for definitions of quantities; source codes in brackets, seethis link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)
dynamical type, primary:main belt asteroid
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 2.235833262 AU | | orbital periodP: | 3.343238208 yr
(= 1221.1177550 d) | | eccentricitye: | 0.143528228 | | perihelion distanceq: | 1.91492808 AU | | aphelion distanceQ: | 2.556738448 AU | | inclinationi: | 4.6957669° | | argument of perihelionω: | 297.450734° | | ascending nodeΩ: | 99.643919° | | mean anomalyM: | 185.920955° | | perihelion passageTP: | 2016 Jan 03.47503 | | Epoch: | 2014 May 23 | | data arc: | 1908-2014(1270 obs.) | | Earth MOID: | 0.926504 AU | | Jupiter Tisserand invariantTJ: | 3.62 |
orbital data, secondary: | semimajor axisas: | 34 km[*E] | | separation/primary radiusas/rp: | 6.9 [*E] | | separation/Hill radiusas/rH: | 0.023 [*E] | | orbital periodPs: | 1.969± 0.0008d [F13c] | | eccentricityes: | ? | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 11.97[MPC]
12.17 ± 0.05 [F13f] | | slope parameterG: | 0.24 [F13c] | | effective diameterdE: | 10.41± 0.08 km [M11b] | | geometric albedo: | 0.273± 0.074[M11b] | | color indexU-B: | 0.54[JPL] | | color indexB-V: | 0.9[JPL] | | taxonomic type: | S (SMASSII) [JPL]
S (Tholen) [JPL] | | massm: | ? | | densityρ: | (1.6 g/cm3) [*A] | | Hill radiusrH: | 1500 km [*E] |
other data, primary: | diameterdp: | 9.79± 0.08 km [*D] | | rotation periodRPp: | 2.7097± 0.0001h [F13c] | | amplitude in mag., rotationalΔM: | 0.08 [F13c] | | amplitude in mag., mutual eventsΔM: | 0.13 [F13c] | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 3.53km [*D] | | diameter ratiods/dp: | >0.36± 0.02 [F13c] | | component mag. differenceΔM: | <2.2± 0.1 [*D] | | rotation periodRPs: | ? | |
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--(1052) Belgica --discovery and notes:
Primary discovered1925 Nov 15from Uccle, Belgiumby E. Delporte.Alternate designation(s):1925 VD, 1965 UO1, A908 TB.Linked to prediscovery observations from 1908 Oct 03.Permanent number assigned -.
Named 1926 for Belgium.
Companion discovered2012 Nov 17 by L. Franco, P. Pravec, A. Ferrero, and L. Martinezusinglightcurve observations from Rome, Italy; Ondrejov Observatory, Czech Republic; Mombercelli, Asti, Italy; Casa Grande, Arizona, USA.Announced2013 Jan 07 [F13c].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Franco, Lorenzo, Ferrero, Andrea, Martinez, Luis, Pravec, Petr, & Padovan, Stefano 2013, Minor Planet BulletinBinary Nature for the Asteroid 1052 Belgica
- Franco, L., Pravec, P., Ferrero, A., & Martinez, L. 2013, Central Bureau Electronic Telegrams(1052) Belgica
- Bus, S. & Binzel, R. P. 2004, NASA Planetary Data System1052 Belgica CCD Spectrum
- Liu, C.-R. 1958, Minor Planet CircularsNew Elements of (1052) Belgica
©2013, 2014by Wm. Robert Johnston.
Last modified21 September 2014.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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