Asteroids with Satellites Database--Johnston's Archive
(8077)
Hoyle
compiled by Wm. Robert Johnston
last updated
27 May 2019
--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: |
2.629430366 AU
| |
orbital period P: |
4.263757645 yr
(= 1557.366893 d)
| |
eccentricity e: |
0.215427859
| |
perihelion distance q: |
2.06297781 AU
| |
aphelion distance Q: |
3.195882919 AU
| |
inclination i: |
17.2661596°
| |
argument of perihelion ω: |
35.063779°
| |
ascending node Ω: |
135.76623°
| |
mean anomaly M: |
119.9836046°
| |
perihelion passage TP: |
2016 Apr 02.948629
| |
Epoch: |
2017 Sep 04
| |
data arc: |
1954-2017
(1405 obs.)
| |
Earth MOID: |
1.09411 AU
| |
Jupiter Tisserand invariant TJ: |
3.305
|
orbital data, secondary:
|
semimajor axis as: |
31
km
[*E]
| |
orbital period Ps: |
2.244
± 0.0011
d [K16a]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
12.9
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
8.51
± 0.74
km [U11a]
| |
geometric albedo: |
0.169
± 0.03
[*A#]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
?
| |
density ρ: |
(1.6
g/cm3) [*A]
| |
Hill radius rH: |
1310 km [*E]
|
other data, primary:
|
diameter dp: |
8.03
km [*D]
| |
rotation period RPp: |
2.7454
h [JPL]
| |
amplitude in mag., rotational ΔM: |
?
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
2.81
km [*D]
| |
diameter ratio ds/dp: |
0.35
[K16a]
| |
component mag. difference ΔM: |
2.3
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(8077) Hoyle
--discovery and notes:
Primary discovered
1986 Jan 12
from
Anderson Mesa Station, Arizona, USA
by
E. Bowell.
Alternate designation(s):
1986 AW2
.
Linked to prediscovery observations from 1954 Sep 08.
Permanent number assigned 1997 Dec 14.
Named 2000 Jul 26 for Fred Hoyle (1915-) [MPC041028].
Companion discovered
2016 Feb 06
by D. A. Klinglesmith, S. Hendrickx
using
lightcurve
observations from Etscorn Campus Observatory, Socorro, NM.
Announced
2016 Jun [K16a].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2017, 2019
by Wm. Robert Johnston.
Last modified
27 May 2019.
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