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Asteroids with Satellites Database--Johnston's Archive
(612687) 2003 UN284
compiled by Wm. Robert Johnston
last updated10 April 2022--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:TNO, Cubewano
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 42.79318508 AU | | orbital periodP: | 279.9433274 yr
(= 102249.3004 d) | | eccentricitye: | 0.006737713 | | perihelion distanceq: | 42.50485688 AU | | aphelion distanceQ: | 43.08151329 AU | | inclinationi: | 3.071819987° | | argument of perihelionω: | 27.39667061° | | ascending nodeΩ: | 36.03442653° | | mean anomalyM: | 4.36711406° | | perihelion passageTP: | 2010 Dec 29 | | Epoch: | 2014 May 23 | | data arc: | 2003-2008(31 obs.) | | Earth MOID: | 41.5173 AU | | Jupiter Tisserand invariantTJ: | 5.849 | | Neptune Tisserand invariantTN: | 3.085 [*D] |
orbital data, secondary: | semimajor axisas: | 54000± 2000 km[G14a] | | separation/primary radiusas/rp: | 870 [*D] | | separation/Hill radiusas/rH: | 0.14 [*D] | | orbital periodPs: | 3180± 90d [G14a] | | eccentricityes: | 0.38± 0.02[G14a] | | inclinationis: | 32.6° ± 0.7° [G14a] | | ascending nodeΩs: | 50° ± 1° [G14a] | | argument of pericenterωs: | 270° ± 4° [G14a] | | mean anomalyM: | 202° ± 3° [G14a] | | Epoch: | 2003 Nov 20.3 | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 7.5[MPC] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 149 km [*D] | | geometric albedo: | 0.09± 0.03/0.01[P11a] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | 1.3x1018 ± 1x1017kg [G14a] | | densityρ: | (1 g/cm3) [*A] | | Hill radiusrH: | 380000 km [*D] |
other data, primary: | diameterdp: | 124± 6/10 km [P11a] | | rotation periodRPp: | ? | | amplitude in mag., rotationalΔM: | ? | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 83± 5/7km [*D] | | diameter ratiods/dp: | 0.667± 0.018 [P11a] | | component mag. differenceΔM: | 0.88± 0.06 [P11a] | | rotation periodRPs: | ? | |
|
--(612687) 2003 UN284 --discovery and notes:
Primary discovered2003 Oct 24from Kitt Peak Observatory, Arizona, USAby M. W. Buie. Permanent number assigned 28 Mar 2022.
Companion discovered2003 Oct 24 by R. L. Millis, K. B. Clancy, Deep Ecliptic Survey teamusingimaging observations from Mayall Telescope, Kitt Peak, Arizona, USA.Announced2003 Dec 05 [M03k].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Kern, S. D., Schechter, P. L., Pittichova, J., Meech, K. J., Wasserman, L. H., Trilling, D. E., Buie, M. W., Millis, R. L., Chiang, E. I., Hylton, S. N., Clancy, K. B., Lovering, J. R., & Marsden, B. G. 2004, Minor Planet Electronic Circulars2002 VB131, 2003 UN284
- Wasserman, L. H., Trilling, D. E., Chiang, E. I., Lovering, J. R., Clancy, K. B., Kern, S. D., & Marsden, B. G. 2003, Minor Planet Circulars2003 UN284
- Millis, R. L. & Clancy, K. B. 2003, International Astronomical Union Circular2003 UN_284
©2003-2015, 2022by Wm. Robert Johnston.
Last modified10 April 2022.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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