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528381 (2008 ST291)
Classification:
TransNeptunian Object
SPK-ID:
2528381
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Physical Parameters
|
Discovery Circumstances
]
[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference:
JPL 10
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.5789577267350223
7.094e-05
a
100.8724924592254
0.014955
au
q
42.47158353493658
0.0033307
au
i
20.72800599272913
0.00013473
deg
node
330.8820618980277
0.0003499
deg
peri
325.296576041467
0.006077
deg
M
23.47330343374546
0.0060712
deg
t
p
2435072.058727597836
(1954-Nov-25.55872760)
0.88152
TDB
period
370047.5684039151
1013.14
82.291
0.2253
d
yr
n
.0009728479004814106
2.1634e-07
deg/d
Q
159.2734013835142
0.023613
au
Orbit Determination Parameters
# obs. used (total)
93
data-arc span
4346 days (11.90 yr)
first obs. used
2008-09-24
last obs. used
2020-08-18
planetary ephem.
DE441
SB-pert. ephem.
SB441-N16
condition code
2
norm. resid. RMS
.50709
source
ORB
producer
Otto Matic
solution date
2021-Apr-14 19:39:27
Additional Information
Earth MOID
= 41.4751 au
Jupiter MOID
= 37.4478 au
T_jup
= 6.767
[ show covariance matrix ]
[
Ephemeris
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Orbit Diagram
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Orbital Elements
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Discovery Circumstances
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Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
4.4
n/a
E2018X68
528381 (2008 ST291)
Discovered 2008-Sep-24 by Schwamb, M. E., Brown, M. E., Rabinowitz, D. L. at Palomar
Reference:
Last Updated:
2019-05-29
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Physical Parameters
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Discovery Circumstances
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2021-Apr-22 15:22 UT
(server date/time)
Site Manager:
Ryan S. Park
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