Movatterモバイル変換
[0]ホーム
Asteroids with Satellites Database--Johnston's Archive
(48639) 1995 TL8
compiled by Wm. Robert Johnston
last updated21 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
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 52.560 AU | | orbital periodP: | 381.054 yr
(= 139180.1 d) | | eccentricitye: | 0.23597 | | perihelion distanceq: | 40.1573 AU | | aphelion distanceQ: | 64.962 AU | | inclinationi: | 0.24245° | | argument of perihelionω: | 84.426° | | ascending nodeΩ: | 261.059° | | mean anomalyM: | 40.346° | | perihelion passageTP: | 1971 Sep 07 | | Epoch: | 2014 May 23 | | data arc: | 1995-2008(48 obs.) | | Earth MOID: | 39.1489 AU | | Jupiter Tisserand invariantTJ: | 6.276 | | Neptune Tisserand invariantTN: | 3.14 [*D] |
orbital data, secondary: | semimajor axisas: | 420± 300 km (separation) [S06c] | | separation/primary radiusas/rp: | 4.8 [*E] | | separation/Hill radiusas/rH: | 0.0009 [*E] | | orbital periodPs: | 1.4d [*E] | | eccentricityes: | ? | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 5.4[MPC]
5.28 [JPL] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 194 km [M13a] | | geometric albedo: | 0.369± 0.237/0.142[M13a] | | color indexU-B: | ? | | color indexB-V: | 1.04[B05b] | | color indexV-R: | 0.69 ± 0.01 [B05b] | | color indexB-R: | 1.73 [B05b] | | color indexV-I: | 1.33 ± 0.01 [B05b] | | color indexR-J: | 1.73 [*D] | | color indexV-J: | 2.42 ± 0.05 [B05b] | | color indexJ-H: | 0.4 [*D] | | color indexV-H: | 2.82 ± 0.07 [B05b] | | taxonomic type: | RR (G-mode) [B05b] | | massm: | ? | | densityρ: | (1 g/cm3) [*A] | | Hill radiusrH: | 480000 km [*E] |
other data, primary: | diameterdp: | 176 km [*D] | | rotation periodRPp: | ? | | amplitude in mag., rotationalΔM: | ? | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 80km [*D] | | diameter ratiods/dp: | 0.457 [G12b] | | component mag. differenceΔM: | 1.7 [S06c] | | rotation periodRPs: | ? | |
|
--(48639) 1995 TL8 --discovery and notes:
Primary discovered1995 Oct 15from Kitt Peak Observatory, Arizona, USAby A. Gleason.Linked to prediscovery observations from 1995 Sep 24.Permanent number assigned 2002 Nov 20.
Companion discovered2002 Nov 09usingHubble Space Telescope observations from Hubble Space Telescope.Announced2005 Oct 06.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Sheppard, Scott S. 2010, The Astronomical JournalThe Colors of Extreme Outer Solar System Objects
- Gladman, B., Holman, M., Grav, T., Kavelaars, J., Nicholson, P., Aksnes, K., & Petit, J.-M. 2002, IcarusEvidence for an Extended Scattered Disk
- Gehrels, T., Scotti, J. V., Montani, J. L., Gleason, A. E., & Marsden, B. G. 2000, Minor Planet Electronic Circulars1995 TL8
©2005, 2014by Wm. Robert Johnston.
Last modified21 September 2014.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
[8]ページ先頭