Movatterモバイル変換
[0]ホーム
Asteroids with Satellites Database--Johnston's Archive
(348400) 2005 JF21
compiled by Wm. Robert Johnston
last updated25 May 2024--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:NEA, Amor(PHA)
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 2.2252428767 AU | | orbital periodP: | 3.319512677 yr
(= 1212.4520051 d) | | eccentricitye: | 0.53565242 | | perihelion distanceq: | 1.033286144 AU | | aphelion distanceQ: | 3.4171996097 AU | | inclinationi: | 10.8486947° | | argument of perihelionω: | 206.110524° | | ascending nodeΩ: | 132.1987536° | | mean anomalyM: | 272.7592467° | | perihelion passageTP: | 2022 Apr 20.8200731 | | Epoch: | 2021 Jul 01 | | data arc: | 2002-2021(1202 obs.) | | Earth MOID: | 0.0464717 AU | | Jupiter Tisserand invariantTJ: | 3.423 |
orbital data, secondary: | semimajor axisas: | 0.97 km[*E] | | separation/primary radiusas/rp: | 3.2 [*E] | | separation/Hill radiusas/rH: | 0.020 [*E] | | orbital periodPs: | 0.6158± 0.0004d [S16a] | | eccentricityes: | ? | | normalized ang. mom.αL: | ? |
orbital data, tertiary: | semimajor axisas: | ? | | separation/primary radiusas/rp: | ? | | separation/Hill radiusas/rH: | ? | | orbital periodPs: | ? | | eccentricityes: | ? | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 17.28[MPC] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 0.62± 0.41/0.17 km [N21c] | | geometric albedo: | 0.387± 0.375/0.25[N21c] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | V (SMASSII) [P19b] | | massm: | ? | | densityρ: | (1.6 g/cm3) [*A] | | Hill radiusrH: | 49 km [*E] |
other data, primary: | diameterdp: | 0.61± 0.40/0.17 km [*D] | | rotation periodRPp: | 2.4144h [W17a] | | amplitude in mag., rotationalΔM: | 0.06 [W17a] | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 0.12± 0.05km [*D] | | diameter ratiods/dp: | >0.19± 0.02 [S16a] | | component mag. differenceΔM: | <3.61± 0.23 [*D] | | rotation periodRPs: | ? | |
other data, tertiary: | diameterds: | ? | | diameter ratiods/dp: | ? | | component mag. differenceΔM: | ? | | rotation periodRPs: | ? | |
|
--(348400) 2005 JF21 --discovery and notes:
Primary discovered2005 May 04from Kitt Peak Observatory, Arizona, USAby Spacewatch Program.Alternate designation(s): 2005 JU67.Linked to prediscovery observations from 2002 Nov 19.Permanent number assigned 2012 Dec 28.
Companion discovered2015 Augusingradar observations from Goldstone Observatory, California, USA.Announced2015 Aug 22.
Third component discovered 2020 May usingradar observations from Goldstone Observatory, California, USA.Announced 2020 Jun 09.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©2015-2021, 2024by Wm. Robert Johnston.
Last modified25 May 2024.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
[8]ページ先頭