Asteroids with Satellites Database--Johnston's Archive
(1626)
Sadeya
compiled by Wm. Robert Johnston
last updated
30 April 2022
--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: |
2.3643270258 AU
| |
orbital period P: |
3.6354763167 yr
(= 1327.8828034 d)
| |
eccentricity e: |
0.272979485
| |
perihelion distance q: |
1.718914252 AU
| |
aphelion distance Q: |
3.0097398001 AU
| |
inclination i: |
25.3121397°
| |
argument of perihelion ω: |
149.233004°
| |
ascending node Ω: |
279.483869°
| |
mean anomaly M: |
281.6619921°
| |
perihelion passage TP: |
2021 Mar 15.954704
| |
Epoch: |
2021 Jul 01
| |
data arc: |
1927-2020
(2686 obs.)
| |
Earth MOID: |
0.76304 AU
| |
Jupiter Tisserand invariant TJ: |
3.373
|
orbital data, secondary:
|
semimajor axis as: |
54
km
[*E]
| |
separation/primary radius as/rp: | 7.4 [*E] | |
separation/Hill radius as/rH: | 0.027 [*E] | |
orbital period Ps: |
2.138
± 0.008
d [B20d]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
11.2
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
15.14
± 0.49
km [M12b]
| |
geometric albedo: |
0.486
± 0.067
[M12b]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
2000 km [*E]
|
other data, primary:
|
diameter dp: |
14.65
± 0.48
km [*D]
| |
rotation period RPp: |
3.4202
± 0.0002
h [B20d]
| |
amplitude in mag., rotational ΔM: |
0.16
[B20d]
| |
amplitude in mag., mutual events ΔM: | 0.085 ±0.015 [B20d] | |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
3.81
± 0.32
km [*D]
| |
diameter ratio ds/dp: |
0.26
± 0.02
[B20d]
| |
component mag. difference ΔM: |
2.93
± 0.17
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(1626) Sadeya
--discovery and notes:
Primary discovered
1927 Jan 10
from
Barcelona, Spain
by
J. Comas Sola.
Alternate designation(s):
1927 AA,
1956 AA.
Permanent number assigned -.
Named 1964 Jan 30 for the Sociedad Astronomica de Espana y America [MPC002277].
Companion discovered
2020 Aug 01
by Benishek, V., P. Pravec, A. Marchini, R. Papini, F. Salvaggio, V. Chiorny, and M. Husarik
using
lightcurve
observations from Sopot Observatory, Serbia; Astronomical Observatory of the University of Siena; Chuguev Station, Kharkiv Observatory, Ukraine; Skalnate Pleso Observatory.
Announced
2020 Dec 01 [B20d].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2020-2021, 2022
by Wm. Robert Johnston.
Last modified
30 April 2022.
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