Asteroids with Satellites Database--Johnston's Archive
(100015)
Sutcliffe
compiled by Wm. Robert Johnston
last updated
29 September 2025
--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:
Mars crossing asteroid
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
2.3651429031 AU
| |
orbital period P: |
3.637426961 yr
(= 1328.5701974 d)
| |
eccentricity e: |
0.2992688022
| |
perihelion distance q: |
1.6573294194 AU
| |
aphelion distance Q: |
3.0729563868 AU
| |
inclination i: |
4.388231766°
| |
argument of perihelion ω: |
88.79579629°
| |
ascending node Ω: |
269.24822865°
| |
mean anomaly M: |
346.55046171°
| |
perihelion passage TP: |
2026 Jan 09.6351548
| |
Epoch: |
2025 Nov 21
| |
data arc: |
1989-2025
(1469 obs.)
| |
Earth MOID: |
0.65977 AU
| |
Jupiter Tisserand invariant TJ: |
3.483
|
orbital data, secondary:
|
semimajor axis as: |
3.5
km
[*E]
| |
separation/primary radius as/rp: | 4.3 [*E] | |
separation/Hill radius as/rH: | 0.015 [*E] | |
orbital period Ps: |
0.8604
± 0.0004
d [B18g]
| |
eccentricity es: |
?
| |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
15.92
[MPC]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
1.71
km [*E]
| |
geometric albedo: |
(0.26
) [*A]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
| |
mass m: |
?
| |
density ρ: |
(2
g/cm3) [*A]
| |
Hill radius rH: |
230 km [*E]
|
other data, primary:
|
diameter dp: |
1.61
km [*E]
| |
axial ratios a/b, b/c: | 1.0, ? [*E] | |
rotation period RPp: |
2.4172
± 0.0002
h [B18g]
| |
amplitude in mag., rotational ΔM: |
0.05
[B18g]
| |
amplitude in mag., mutual events ΔM: | 0.17 ±0.04 [B18g] | |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
0.56
km [*E]
| |
diameter ratio ds/dp: |
0.35
± 0.02
[B18g]
| |
component mag. difference ΔM: |
2.28
± 0.12
[*D]
| |
rotation period RPs: |
?
| |
|
|
--
(100015) Sutcliffe
--discovery and notes:
Primary discovered
1989 Sep 28
from
Palomar Observatory, California, USA
by
C. S. Shoemaker.
Alternate designation(s):
1989 SR7,
2000 UC98.
Linked to prediscovery observations from 1989 Sep 27.
Permanent number assigned 2005 Oct 19.
Named 2025 Nov 03 [WGSBN0525].
Companion discovered
2018 Sep 09
by V. Benishek, P. Pravec, H. Kucakova, K. Hornoch, P. Kusnirak, J. Oey, R. Groom, A. Aznar, and A. Sota
using
lightcurve
observations from Sopot Observatory, Serbia; Ondrejov Observatory, Czech Republic; Blue Mountains Observatory, Leura, New South Wales, Australia; Darling Range Observatory, Western Australia, Australia; Sierra Nevada Observatory, Grenada, Spain.
Announced
2018 Oct 23 [B18g].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
©
2018-2019, 2025
by Wm. Robert Johnston.
Last modified
3 November 2025.
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