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Asteroids with Satellites Database--Johnston's Archive
(3309) Brorfelde
compiled by Wm. Robert Johnston
last updated29 May 2019--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, Hungaria
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 1.817472098 AU | | orbital periodP: | 2.450246799 yr
(= 894.9526434 d) | | eccentricitye: | 0.053273893 | | perihelion distanceq: | 1.720648283 AU | | aphelion distanceQ: | 1.914295912 AU | | inclinationi: | 21.13386726° | | argument of perihelionω: | 218.6272573° | | ascending nodeΩ: | 29.8075185° | | mean anomalyM: | 313.5223649° | | perihelion passageTP: | 2014 Sep 15.5424 | | Epoch: | 2014 May 23 | | data arc: | 1982-2014(909 obs.) | | Earth MOID: | 0.728988 AU | | Jupiter Tisserand invariantTJ: | 3.964 |
orbital data, secondary: | binary dynamical type: | A [P07f] | | semimajor axisas: | 9 km[*E] | | separation/primary radiusas/rp: | 3.7 [*E] | | separation/Hill radiusas/rH: | 0.014 [*E] | | orbital periodPs: | 0.77± 0.0004d [W05d] | | eccentricityes: | <0.08[P16d] | | normalized ang. mom.αL: | 1.09[P07f] |
| other data, system (combined):| absolute mag.H: | 13.6[MPC]
13.4 ± 0.2 [W05d] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 5.04± 0.08 km [M12b] | | geometric albedo: | 0.253± 0.172[M12b] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | S (SMASSII) [JPL] | | massm: | ? | | densityρ: | (1.6 g/cm3) [*A] | | Hill radiusrH: | 660 km [*E] |
other data, primary: | diameterdp: | 4.88± 0.08 km [*D] | | rotation periodRPp: | 2.5041± 0.0002h [W05d] | | amplitude in mag., rotationalΔM: | 0.09 [W05d] | | amplitude in mag., mutual eventsΔM: | 0.11 ±0.04 [W05d] | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 1.27± 0.1km [*D] | | diameter ratiods/dp: | 0.26± 0.02 [W05d] | | component mag. differenceΔM: | 2.93± 0.17 [*D] | | rotation periodRPs: | 18.45± 0.01h [W09d] | |
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--(3309) Brorfelde --discovery and notes:
Primary discovered1982 Jan 28from Brorfelde, Denmarkby K. S. Jensen.Alternate designation(s):1982 BH.Permanent number assigned 1985 Sep 29.
Named 1987 Sep 07 for the village of Brorfelde, Zealand, Denmark [MPC012210].
Companion discovered2005 Oct 25 by B. D. Warner, P. Pravec, P. Kusnirak, W. Cooney, J. Gross, D. Terrell, and S. Nuddsusinglightcurve observations from Palmer Divide Observatory, Colorado Springs, Colorado, USA; Ondrejov Observatory, Czech Republic; Sonoita Research Observatory, Sonoita, Arizona, USA; University of Western Ontario, Ontario, Canada.Announced2005 Nov 07 [W05d].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Warner, Brian D. 2009, Minor Planet BulletinAnalysis of the Hungaria Binary Asteroid 3309 Brorfelde
- Warner, B. D., Pravec, P., Kusnirak, P., Cooney, W., Gross, J., Terrell, D., & Nudds, S. 2005, Central Bureau Electronic Telegrams(3309) Brorfelde
- Bus, S. & Binzel, R. P. 2004, NASA Planetary Data System3309 Brorfelde CCD Spectrum
©2005-2014, 2019by Wm. Robert Johnston.
Last modified29 May 2019.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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