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JPL Small-Body Database Browser
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249122 (2007 XU21)
Classification:
Main-belt Asteroid
SPK-ID:
2249122
[
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 16
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.1204795704308966
4.875e-08
a
2.601079538540191
2.4058e-08
au
q
2.287702593080274
1.3305e-07
au
i
3.237883535607116
4.3432e-06
deg
node
270.0007548915628
9.4362e-05
deg
peri
274.491998742791
9.6151e-05
deg
M
159.7751378095136
2.1762e-05
deg
t
p
2457920.458250489597
(2017-Jun-15.95825049)
8.9433e-05
TDB
period
1532.247339480424
4.20
2.1258e-05
5.82e-08
d
yr
n
.2349490129459607
3.2596e-09
deg/d
Q
2.914456484000107
2.6956e-08
au
Orbit Determination Parameters
# obs. used (total)
331
data-arc span
9119 days (24.97 yr)
first obs. used
1994-11-10
last obs. used
2019-10-29
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.50046
source
ORB
producer
Otto Matic
solution date
2019-Nov-08 02:44:08
Additional Information
Earth MOID
= 1.29274 au
Jupiter MOID
= 2.06485 au
T_jup
= 3.402
[ 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
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Close-Approach Data
]
Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
16.0
n/a
MPO454845
249122 (2007 XU21)
Discovered 2007-Dec-10 by LINEAR at Socorro
Reference:
20100824/Numbers.arc
Last Updated:
2010-08-27
[ show close-approach data ]
[
Ephemeris
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Orbit Diagram
|
Orbital Elements
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Mission Design
|
Physical Parameters
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Discovery Circumstances
|
Close-Approach Data
]
2019-Dec-10 08:36 UT
(server date/time)
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