Asteroids with Satellites Database--Johnston's Archive
(250162)
2002 TY57
compiled by Wm. Robert Johnston
last updated
9 October 2021
--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:
NEA, Amor
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
1.9216926796 AU
| |
orbital period P: |
2.6639992971 yr
(= 973.0257433 d)
| |
eccentricity e: |
0.327224977
| |
perihelion distance q: |
1.29286684 AU
| |
aphelion distance Q: |
2.550518522 AU
| |
inclination i: |
3.4556345°
| |
argument of perihelion ω: |
259.89229°
| |
ascending node Ω: |
118.95623°
| |
mean anomaly M: |
10.814305°
| |
perihelion passage TP: |
2021 Jun 01.770563
| |
Epoch: |
2021 Jul 01
| |
data arc: |
2002-2019
(384 obs.)
| |
Earth MOID: |
0.301712 AU
| |
Jupiter Tisserand invariant TJ: |
3.854
|
orbital data, secondary:
|
semimajor axis as: |
0.42
km
[*E]
| |
separation/primary radius as/rp: | 2.6 [*E] | |
separation/Hill radius as/rH: | 0.0086 [*E] | |
orbital period Ps: |
0.4485
± 0.0002
d [P18d]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
19.3
[MPC]
19.69 ± 0.05 [P18d]
| |
slope parameter G: |
0.34 [P18d]
| |
effective diameter dE: |
0.331
± 0.161/0.076
km [N18a]
| |
geometric albedo: |
0.276
± 0.201/0.152
[N18a]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
49 km [*E]
|
other data, primary:
|
diameter dp: |
0.33
km [*D]
| |
rotation period RPp: |
2.5001
± 0.0003
h [P18d]
| |
amplitude in mag., rotational ΔM: |
0.09
[P18d]
| |
amplitude in mag., mutual events ΔM: | 0.05 ±0.02 [P18d] | |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
>0.059
km [*D]
| |
diameter ratio ds/dp: |
>0.18
[P18d]
| |
component mag. difference ΔM: |
<3.72
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(250162) 2002 TY57
--discovery and notes:
Primary discovered
2002 Oct 02
from
Haleakala, Hawaii, USA
by
NEAT.
Linked to prediscovery observations from 2002 Aug 04.
Permanent number assigned 2010 Sep 23.
Companion discovered
2018 Nov 10
by P. Pravec, P. Kusnirak, K. Hornoch, P. Fatka, and H. Kucakova
using
lightcurve
observations from European Southern Observatory, La Silla.
Announced
2018 Dec 18 [P18d].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2018, 2021
by Wm. Robert Johnston.
Last modified
9 October 2021.
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