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JPL Small-Body Database Browser
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117157 (2004 QR9)
Classification:
Main-belt Asteroid
SPK-ID:
2117157
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
|
Close-Approach Data
]
[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference:
JPL 13
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.1371946603099337
6.373e-08
a
2.469272815569951
1.7001e-08
au
q
2.130501770425278
1.5456e-07
au
i
6.620326309302395
7.1948e-06
deg
node
22.48892509546916
4.0317e-05
deg
peri
346.5275190222565
4.4579e-05
deg
M
255.4419731884765
1.9012e-05
deg
t
p
2459012.129903982733
(2020-Jun-11.62990398)
7.6508e-05
TDB
period
1417.268190235703
3.88
1.4637e-05
4.007e-08
d
yr
n
.254009793263002
2.6233e-09
deg/d
Q
2.808043860714624
1.9334e-08
au
Orbit Determination Parameters
# obs. used (total)
523
data-arc span
6977 days (19.10 yr)
first obs. used
1999-03-13
last obs. used
2018-04-19
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.5867
source
ORB
producer
Otto Matic
solution date
2019-Jul-13 18:47:19
Additional Information
Earth MOID
= 1.12987 au
Jupiter MOID
= 2.65041 au
T_jup
= 3.463
[ show covariance matrix ]
[
Ephemeris
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Orbit Diagram
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Orbital Elements
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Mission Design
|
Physical Parameters
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Discovery Circumstances
|
Close-Approach Data
]
Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
15.7
n/a
MPO257545
117157 (2004 QR9)
Discovered 2004-Aug-21 by Siding Spring Survey at Siding Spring
Reference:
20051019/Numbers.arc
Last Updated:
2005-10-26
[ show close-approach data ]
[
Ephemeris
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Orbit Diagram
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Orbital Elements
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Mission Design
|
Physical Parameters
|
Discovery Circumstances
|
Close-Approach Data
]
2019-Dec-11 06:04 UT
(server date/time)
Site Manager:
Ryan S. Park
Webmaster
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