Asteroids with Satellites Database--Johnston's Archive
(3643)
Tienchanglin
compiled by Wm. Robert Johnston
last updated
2 May 2024
--Orbital and physical data--
(See this page for definitions of quantities; source codes in brackets, see this link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)
dynamical type, primary:
main belt asteroid
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
2.40183965506 AU
| |
orbital period P: |
3.72241010582 yr
(= 1359.61029115 d)
| |
eccentricity e: |
0.15077120779
| |
perihelion distance q: |
2.0397113894 AU
| |
aphelion distance Q: |
2.76396792076 AU
| |
inclination i: |
13.883928931°
| |
argument of perihelion ω: |
3.99691324°
| |
ascending node Ω: |
56.74393883°
| |
mean anomaly M: |
58.04047633°
| |
perihelion passage TP: |
2023 Aug 24.79880857
| |
Epoch: |
2024 Mar 31
| |
data arc: |
1937-2024
(3752 obs.)
| |
Earth MOID: |
1.05274 AU
| |
Jupiter Tisserand invariant TJ: |
3.47
|
orbital data, secondary:
|
semimajor axis as: |
24
km
[*E]
| |
separation/primary radius as/rp: | 5.0 [*E] | |
separation/Hill radius as/rH: | 0.016 [*E] | |
orbital period Ps: |
1.1808
± 0.0008
d [A24a]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
13.08
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
9.78
± 0.17
km [M19a]
| |
geometric albedo: |
0.135
± 0.019
[M19a]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
1500 km [*E]
|
other data, primary:
|
diameter dp: |
9.6
km [*E]
| |
rotation period RPp: |
2.86728
± 0.00005
h [A24a]
| |
amplitude in mag., rotational ΔM: |
0.1
[A24a]
| |
amplitude in mag., mutual events ΔM: | 0.08 [A24a] | |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
2.1
km [*E]
| |
diameter ratio ds/dp: |
0.22
[*E]
| |
component mag. difference ΔM: |
3.3
[*E]
| |
rotation period RPs: |
?
| |
|
|
--
(3643) Tienchanglin
--discovery and notes:
Primary discovered
1978 Oct 29
from
Purple Mountain Observatory, Nanking, PR China
by
?.
Alternate designation(s):
1978 UN2,
1937 WK, 1963 TY, 1967 TJ, 1978 WY14, 1983 AS.
Linked to prediscovery observations from 1937 Nov 30.
Permanent number assigned 1987 Jul 11.
Named 1999 Sep 28 for Chang-lin Tien (1935-) [MPC036126].
Companion discovered
2023 Dec 21
by D. Augustin, M. Deldem, R. Behrend, R. Dosso, and O. Ba
using
lightcurve
observations from E-Eye, Fregenal de la Sierra, Spain; Les Barres Observatory, France; L’Observatoire de Haute-Provence, France.
Announced
2024 Apr 22 [A24a].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2024
by Wm. Robert Johnston.
Last modified
2 May 2024.
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