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Asteroids with Satellites Database--Johnston's Archive
2004 KB19
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:TNO, plutino
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 39.782 AU | | orbital periodP: | 250.917 yr
(= 91649.3 d) | | eccentricitye: | 0.22044 | | perihelion distanceq: | 31.013 AU | | aphelion distanceQ: | 48.552 AU | | inclinationi: | 17.11647° | | argument of perihelionω: | 284.646° | | ascending nodeΩ: | 43.91737° | | mean anomalyM: | 304.36° | | perihelion passageTP: | 2057 Jan 02 | | Epoch: | 2018 Mar 23 | | data arc: | 2004-2015(19 obs.) | | Earth MOID: | 30.044 AU | | Jupiter Tisserand invariantTJ: | 5.286 | | Neptune Tisserand invariantTN: | 2.900 [*D] |
orbital data, secondary: | semimajor axisas: | 3400 km (separation) [N18a] | | separation/primary radiusas/rp: | 64 [*E] | | separation/Hill radiusas/rH: | 0.013 [*E] | | orbital periodPs: | 52d [*E] | | eccentricityes: | ? | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 7.4[MPC] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 146 km [*E] | | geometric albedo: | (0.09) [*A] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | ? | | densityρ: | (1 g/cm3) [*A] | | Hill radiusrH: | 270000 km [*E] |
other data, primary: | diameterdp: | 106 km [*E] | | rotation periodRPp: | ? | | amplitude in mag., rotationalΔM: | ? | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 100km [*E] | | diameter ratiods/dp: | 0.95± 0.03 [*D] | | component mag. differenceΔM: | 0.11± 0.06 [N18a] | | rotation periodRPs: | ? | |
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-- 2004 KB19 --discovery and notes:
Primary discovered2004 May 24from Mauna Kea Observatory, Hawaii, USAby Canada-France Ecliptic Plane Survey.
Companion discovered2012 Aug 20 by K. S. Noll, W. M. Grundy, S. D. Benecchi, H. Schlichting, and R. Murray-ClayusingHubble Space Telescope observations from Hubble Space Telescope.Announced2015 Aug [N18a].
--Links, more technical:
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--Links to ADS abstracts:
©2018, 2019by Wm. Robert Johnston.
Last modified29 May 2019.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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