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JPL Small-Body Database Browser
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109902 (2001 SH21)
Classification:
Main-belt Asteroid
SPK-ID:
2109902
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
]
[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference:
JPL 18
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.0501446496675788
4.1894e-08
a
2.553600845006372
1.1676e-08
au
q
2.425551425242694
1.0847e-07
au
i
4.604870324936438
4.7891e-06
deg
node
117.0053447432398
5.5372e-05
deg
peri
258.5634772439213
7.3157e-05
deg
M
109.5853122423937
4.7555e-05
deg
t
p
2458146.790580709633
(2018-Jan-28.29058071)
0.00019641
TDB
period
1490.486157335095
4.08
1.0223e-05
2.799e-08
d
yr
n
.2415319311946242
1.6566e-09
deg/d
Q
2.68165026477005
1.2262e-08
au
Orbit Determination Parameters
# obs. used (total)
799
data-arc span
10208 days (27.95 yr)
first obs. used
1991-02-22
last obs. used
2019-02-03
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.59144
source
ORB
producer
Otto Matic
solution date
2019-Jul-13 04:53:20
Additional Information
Earth MOID
= 1.42991 au
Jupiter MOID
= 2.53695 au
T_jup
= 3.432
[ show covariance matrix ]
[
Ephemeris
|
Orbit Diagram
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Orbital Elements
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Mission Design
|
Physical Parameters
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Discovery Circumstances
]
Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
15.6
n/a
MPO268016
109902 (2001 SH21)
Discovered 2001-Sep-16 by LINEAR at Socorro
Reference:
20051019/Numbers.arc
Last Updated:
2005-10-26
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
]
2019-Dec-08 19:29 UT
(server date/time)
Site Manager:
Ryan S. Park
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