Asteroids with Satellites Database--Johnston's Archive
(469514)
2003 QA91
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:
TNO, Cubewano
orbital data, primary (osculating elements)
[JPL]
: |
semimajor axis a: |
44.4853 AU
| |
orbital period P: |
296.705 yr
(= 108373.7 d)
| |
eccentricity e: |
0.066021
| |
perihelion distance q: |
41.5484 AU
| |
aphelion distance Q: |
47.4223 AU
| |
inclination i: |
2.41338°
| |
argument of perihelion ω: |
328.849°
| |
ascending node Ω: |
104.626°
| |
mean anomaly M: |
278.4874°
| |
perihelion passage TP: |
2086 Jul 02.4
| |
Epoch: |
2019 Apr 27
| |
data arc: |
2003-2015
(107 obs.)
| |
Earth MOID: |
40.5634 AU
| |
Jupiter Tisserand invariant TJ: |
5.947
|
| Neptune Tisserand invariant TN: | 3.101 [*D] |
orbital data, secondary:
|
semimajor axis as: |
1594
± 44 km
[G19b]
| |
separation/primary radius as/rp: | 17 [*D] | |
separation/Hill radius as/rH: | 0.0025 [*D] | |
orbital period Ps: |
10.10891
± 0.00028
d [G19b]
| |
eccentricity es: |
0.023
± 0.02
[G19b]
| |
inclination is: | 88° ± 8.4° [G19b] | |
ascending node Ωs: | 67.5° ± 8.6° [G19b] | |
argument of pericenter ωs: | 290° ± 43° [G19b] | |
mean anomaly M: | 217° ± 9.1° [G19b] | |
Epoch: | 2014 Dec 08.5 | |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
5.6
[MPC]
5.76 ± 0.63 [V14a]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
260
± 30/36
km [V14a]
| |
geometric albedo: |
0.13
± 0.119/0.075
[V14a]
| |
color index U-B: |
?
| |
color index B-V: |
?
| |
taxonomic type: |
?
| |
mass m: |
3.14x1018
± 2.65x1017
kg [G19b]
| |
density ρ: |
(1
g/cm3) [*A]
| |
Hill radius rH: |
640000 km [*E]
|
other data, primary:
|
diameter dp: |
188
± 24
km [V14a]
| |
rotation period RPp: |
?
| |
amplitude in mag., rotational ΔM: |
?
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
180
± 35
km [V14a]
| |
diameter ratio ds/dp: |
0.955
± 0.138
[N08c]
| |
component mag. difference ΔM: |
0.1
± 0.6
[N08c]
| |
rotation period RPs: |
?
| |
|
|
--
(469514) 2003 QA91
--discovery and notes:
Primary discovered
2003 Aug 24
from
Cerro Tololo Observatory, La Serena, Chile
by
M. W. Buie.
Permanent number assigned 2016 Aug 18.
Companion discovered
2006 Jun 19
using
Hubble Space Telescope
observations from Hubble Space Telescope.
Announced
2007 Mar 14.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Noll, Keith S., Grundy, William M., Chiang, Eugene I., Margot, Jean-Luc, & Kern, Susan D. 2007, ArXiv Astrophysics e-prints Binaries in the Kuiper Belt
- Wasserman, L. H., Trilling, D. E., Lovering, J. R., Buie, M. W., Elliot, J. L., Kane, J. F., Teyssier, M. E., Millis, R. L., Kern, S. D., Cole, S. J., Jones, T. A., Vaz, A. L., Gulbis, A. A. S., Leung, M., Vax, A. L., Clancy, K. B., & Marsden, B. G. 2004, Minor Planet Electronic Circulars 2003 KO20, 2003 QA91, 2003 QB92
- Marsden, B. G. 2003, Minor Planet Electronic Circulars TEN TNOs
©
2007-2014, 2019
by Wm. Robert Johnston.
Last modified
27 May 2019.
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