Asteroids with Satellites Database--Johnston's Archive
(275809)
2001 QY297
compiled by Wm. Robert Johnston
last updated
20 September 2014
--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: |
43.6820 AU
| |
orbital period P: |
288.710 yr
(= 105451.3 d)
| |
eccentricity e: |
0.08216
| |
perihelion distance q: |
40.0931 AU
| |
aphelion distance Q: |
47.2709 AU
| |
inclination i: |
1.54739°
| |
argument of perihelion ω: |
123.554°
| |
ascending node Ω: |
108.7631°
| |
mean anomaly M: |
82.664°
| |
perihelion passage TP: |
1948 Feb 05
| |
Epoch: |
2014 May 23
| |
data arc: |
2001-2013
(88 obs.)
| |
Earth MOID: |
39.0829 AU
| |
Jupiter Tisserand invariant TJ: |
5.892
|
| Neptune Tisserand invariant TN: | 3.09 [*D] |
orbital data, secondary:
|
semimajor axis as: |
9960
± 31 km
[G11a]
| |
separation/primary radius as/rp: | 120 [*D] | |
separation/Hill radius as/rH: | 0.019 [*D] | |
orbital period Ps: |
138.110
± 0.023
d [G11a]
| |
eccentricity es: |
0.4175
± 0.0023
[G11a]
| |
inclination is: | 172.86° ± 0.2° [G11a] | |
ascending node Ωs: | 135.3° ± 1.3° [G11a] | |
argument of pericenter ωs: | 213° ± 2.8° [G11a] | |
mean anomaly M: | 34.4° ± 2.6° [G11a] | |
Epoch: | 2007 Apr 09.5 | |
normalized ang. mom. αL: |
?
|
|
other data, system (combined):
|
absolute mag. H: |
5.6
[MPC]
5.86 ± 0.31 [V14a]
| |
slope parameter G: |
(0.15) [*A]
| |
effective diameter dE: |
229
± 22/108
km [V14a]
| |
geometric albedo: |
0.152
± 0.439/0.035
[V14a]
| |
color index U-B: |
?
| |
color index B-V: |
0.7
[D05a]
| |
color index V-R: | 0.43 ± 0.09 [D05a] | |
color index B-R: | 1.13 [D05a] | |
color index V-I: | 1.1 ± 0.19 [D05a] | |
taxonomic type: |
?
| |
mass m: |
4.1x1018
± 3.8x1016
kg [G11a]
| |
density ρ: |
0.92
± 1.3/0.27
g/cm3[V14a]
| |
Hill radius rH: |
530000 km [*D]
|
other data, primary:
|
diameter dp: |
169
± 16/80
km [V14a]
| |
color index V-I: | 1.48 ± 0.24 [B08d] | |
rotation period RPp: |
11.68
h [T12c]
| |
amplitude in mag., rotational ΔM: |
0.49
± 0.03
[T12c]
| |
pole direction Β, λ: |
?
,
?
|
other data, secondary:
|
diameter ds: |
154
± 15/73
km [V14a]
| |
diameter ratio ds/dp: |
0.912
[G11a]
| |
component mag. difference ΔM: |
0.42
± 0.07
[N08c]
| |
color index V-I: | 1.25± 0.31 [B08d] | |
rotation period RPs: |
?
| |
|
|
--
(275809) 2001 QY297
--discovery and notes:
Primary discovered
2001 Aug 21
from
Cerro Tololo Observatory, La Serena, Chile
by
M. W. Buie.
Permanent number assigned 2011 May 17.
Companion discovered
2006 Apr 18
using
Hubble Space Telescope
observations from Hubble Space Telescope.
Announced
2007 Mar 14.
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Thirouin, A., Ortiz, J. L., Campo Bagatin, A., Pravec, P., Morales, N., Hainaut, O., & Duffard, R. 2012, Monthly Notices of the Royal Astronomical Society Short-term variability of 10 trans-Neptunian objects
- Grundy, W. M., Noll, K. S., Nimmo, F., Roe, H. G., Buie, M. W., Porter, S. B., Benecchi, S. D., Stephens, D. C., Levison, H. F., & Stansberry, J. A. 2011, Icarus Five new and three improved mutual orbits of transneptunian binaries
- 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
©
2007-2012, 2014
by Wm. Robert Johnston.
Last modified
20 September 2014.
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