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JPL Small-Body Database Browser
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295558 (2008 SM55)
Classification:
Jupiter Trojan
SPK-ID:
2295558
[
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 14
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.09046245809885128
7.5336e-08
a
5.151173038567822
1.6689e-07
au
q
4.685185263406447
4.5621e-07
au
i
15.34430946128143
1.1136e-05
deg
node
199.6145552411374
2.4507e-05
deg
peri
105.9902085980097
8.5313e-05
deg
M
30.27287098795975
7.355e-05
deg
t
p
2458241.405507220763
(2018-May-02.90550722)
0.00087968
TDB
period
4270.292614530708
11.69
0.00020753
5.682e-07
d
yr
n
.08430335634963575
4.097e-09
deg/d
Q
5.617160813729196
1.8199e-07
au
Orbit Determination Parameters
# obs. used (total)
181
data-arc span
8851 days (24.23 yr)
first obs. used
1995-07-28
last obs. used
2019-10-21
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.53336
source
ORB
producer
Otto Matic
solution date
2019-Nov-08 07:01:15
Additional Information
Earth MOID
= 3.71137 au
Jupiter MOID
= .0580877 au
T_jup
= 2.921
[ hide covariance matrix ]
Orbital Elements at Epoch 2457288.5 (2015-Sep-23.0) TDB
Reference:
JPL 14
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.0893889804306806
7.4928e-08
q
4.686898778379216
4.5257e-07
au
t
p
2458237.516354732508
(2018-Apr-29.01635473)
0.0008921
TDB
node
199.6243050212289
2.4505e-05
deg
peri
105.5473958680789
8.6389e-05
deg
i
15.34740954852812
1.1139e-05
deg
Orbit Determination Parameters
# obs. used (total)
181
data-arc span
8851 days (24.23 yr)
first obs. used
1995-07-28
last obs. used
2019-10-21
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.53336
source
ORB
producer
Otto Matic
solution date
2019-Nov-08 07:01:15
Additional Information
Jupiter MOID
= .0580877 au
T_jup
= 2.921
Orbit Covariance (6×6)
e
q
tp
node
peri
i
e
5.614135292530266E-15
-3.210572790177883E-14
3.803667924886626E-11
-6.239524185698539E-15
3.649953215763926E-12
-3.489264141322399E-15
q
-3.210572790177883E-14
2.048220607863331E-13
-2.525329460181159E-10
5.867721265612545E-14
-2.457277787603733E-11
2.649351870851154E-14
tp
3.803667924886626E-11
-2.525329460181159E-10
7.95842006934842E-7
-1.534110283191837E-10
7.386886843915869E-8
-3.75331535148302E-11
node
-6.239524185698539E-15
5.867721265612545E-14
-1.534110283191837E-10
6.004931292613096E-10
-5.933261918588757E-10
-3.014682075065081E-11
peri
3.649953215763926E-12
-2.457277787603733E-11
7.386886843915869E-8
-5.933261918588757E-10
7.463009057414626E-9
2.5358203867277E-11
i
-3.489264141322399E-15
2.649351870851154E-14
-3.75331535148302E-11
-3.014682075065081E-11
2.5358203867277E-11
1.240675244900304E-10
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
]
Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
13.7
n/a
MPO413252
295558 (2008 SM55)
Discovered 2008-Sep-20 by Mt. Lemmon Survey at Mount Lemmon
Reference:
20110912/Numbers.arc
Last Updated:
2011-09-14
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
]
2019-Dec-14 08:44 UT
(server date/time)
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Ryan S. Park
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