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Asteroids with Satellites Database--Johnston's Archive
(469505) 2003 FE128
compiled by Wm. Robert Johnston
last updated25 August 2016--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, 1:2 resonance
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 47.949 AU | | orbital periodP: | 332.030 yr
(= 121274.0 d) | | eccentricitye: | 0.25251 | | perihelion distanceq: | 35.8412 AU | | aphelion distanceQ: | 60.057 AU | | inclinationi: | 3.38370° | | argument of perihelionω: | 53.378° | | ascending nodeΩ: | 169.1866° | | mean anomalyM: | 5.031° | | perihelion passageTP: | 2009 Oct 01 | | Epoch: | 2014 May 23 | | data arc: | 2003-2013(43 obs.) | | Earth MOID: | 34.8343 AU | | Jupiter Tisserand invariantTJ: | 5.973 | | Neptune Tisserand invariantTN: | 3.07 [*D] |
orbital data, secondary: | semimajor axisas: | 2140± 50 km (separation) [G12b] | | separation/primary radiusas/rp: | 24 [*E] | | separation/Hill radiusas/rH: | 0.0045 [*E] | | orbital periodPs: | 14d [*E] | | eccentricityes: | ? | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 6.4[MPC]
6.74 ± 0.18 [P13c] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 221 km [*E] | | geometric albedo: | (0.09) [*A] | | color indexU-B: | ? | | color indexB-V: | ? | | color indexV-R: | 0.69 ± 0.06 [P13c] | | color indexV-I: | 1.27 ± 0.08 [P13c] | | taxonomic type: | RR (G-mode) [P13c] | | massm: | ? | | densityρ: | (1 g/cm3) [*A] | | Hill radiusrH: | 470000 km [*E] |
other data, primary: | diameterdp: | 178 km [*E] | | rotation periodRPp: | 5.85± 0.15h [T14a] | | amplitude in mag., rotationalΔM: | 0.5± 0.14 [T14a] | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 131km [*E] | | diameter ratiods/dp: | 0.735 [G12b] | | component mag. differenceΔM: | 0.67 [G12b] | | rotation periodRPs: | ? | |
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--(469505) 2003 FE128 --discovery and notes:
Primary discovered2003 Mar 31from Kitt Peak Observatory, Arizona, USAby M. W. Buie.Permanent number assigned 18 August 2016.
Companion discovered2010 Jun 26usingHubble Space Telescope observations from Hubble Space Telescope.Announced2012.
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--Links to ADS abstracts:
©2012-2016, 2016by Wm. Robert Johnston.
Last modified25 August 2016.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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