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Asteroids with Satellites Database--Johnston's Archive
2004 PB108
compiled by Wm. Robert Johnston
last updated20 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:TNO, Cubewano
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 45.025 AU | | orbital periodP: | 302.126 yr
(= 110351.5 d) | | eccentricitye: | 0.10982 | | perihelion distanceq: | 40.080 AU | | aphelion distanceQ: | 49.970 AU | | inclinationi: | 20.2373° | | argument of perihelionω: | 274.60° | | ascending nodeΩ: | 147.4823° | | mean anomalyM: | 303.132° | | perihelion passageTP: | 2062 Feb 12 | | Epoch: | 2014 May 23 | | data arc: | 2004-2009(42 obs.) | | Earth MOID: | 39.1546 AU | | Jupiter Tisserand invariantTJ: | 5.602 | | Neptune Tisserand invariantTN: | 2.95 [*D] |
orbital data, secondary: | semimajor axisas: | 10400± 84 km[G11a] | | separation/primary radiusas/rp: | 86 [*D] | | separation/Hill radiusas/rH: | 0.015 [*D] | | orbital periodPs: | 97.02± 0.0075d [G11a] | | eccentricityes: | 0.438± 0.003[G11a] | | inclinationis: | 106.55° ± 0.99° [G09a] | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 6.6[MPC]
7.083 ± 0.016 [G09a] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 277 km [*D] | | geometric albedo: | 0.035± 0.015[G11a] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | 9.47x1018 ± 2.3x1017kg [G11a] | | densityρ: | (1± 1/0.5 g/cm3) [*A] | | Hill radiusrH: | 700000 km [*D] |
other data, primary: | diameterdp: | 243± 57/57 km [G11a] | | color indexV-I: | 1.12 ± 0.07 [B08d] | | rotation periodRPp: | ? | | amplitude in mag., rotationalΔM: | ? | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 132± 31km [*D] | | diameter ratiods/dp: | 0.544± 0.008 [G09a] | | component mag. differenceΔM: | 1.321± 0.032 [G09a] | | color indexV-I: | 1.16± 0.13 [B08d] | | rotation periodRPs: | ? | |
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-- 2004 PB108 --discovery and notes:
Primary discovered2004 Aug 14from Cerro Tololo Observatory, La Serena, Chileby M. W. Buie.
Companion discovered2006 Aug 04 by K. S. Noll, W. M. Grundy, S. D. Kern, H. F. Levison, and D. C. StephensusingHubble Space Telescope observations from Hubble Space Telescope.Announced2007 Mar 03 [N07d].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Grundy, W. M., Noll, K. S., Buie, M. W., Benecchi, S. D., Stephens, D. C., & Levison, H. F. 2009, IcarusMutual orbits and masses of six transneptunian binaries
- Noll, K. S., Grundy, W. M., Kern, S. D., Levison, H. F., & Stephens, D. C. 2007, International Astronomical Union Circular2004 PB_108 and (60621) 2000 FE_8
©2007-2008, 2014by Wm. Robert Johnston.
Last modified20 September 2014.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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