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JPL Small-Body Database Browser
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266649 (2008 SG287)
Classification:
Outer Main-belt Asteroid
SPK-ID:
2266649
[
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 17
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.08709236542810127
5.6491e-08
a
3.952820555030096
9.1583e-08
au
q
3.608560062779704
2.4052e-07
au
i
8.95581648947574
7.7105e-06
deg
node
339.7378532983724
3.8423e-05
deg
peri
109.0796506311411
5.8641e-05
deg
M
67.35569840093416
4.4007e-05
deg
t
p
2458063.429969498200
(2017-Nov-05.92996950)
0.00035341
TDB
period
2870.510076664375
7.86
9.9761e-05
2.731e-07
d
yr
n
.1254132507412521
4.3586e-09
deg/d
Q
4.297081047280487
9.956e-08
au
Orbit Determination Parameters
# obs. used (total)
277
data-arc span
6402 days (17.53 yr)
first obs. used
2001-12-09
last obs. used
2019-06-20
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.61826
source
ORB
producer
Otto Matic
solution date
2019-Sep-24 04:36:46
Additional Information
Earth MOID
= 2.63969 au
Jupiter MOID
= .914089 au
T_jup
= 3.032
[ show covariance matrix ]
[
Ephemeris
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Orbit Diagram
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Orbital Elements
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Mission Design
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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
14.2
n/a
MPO433731
diameter
diameter
7.440
km
0.305
urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)
geometric albedo
albedo
0.073
0.016
urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)
266649 (2008 SG287)
Discovered 2008-Sep-23 by Spacewatch at Kitt Peak
Reference:
20110218/Numbers.arc
Last Updated:
2011-02-22
[ show close-approach data ]
[
Ephemeris
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Orbit Diagram
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Orbital Elements
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Mission Design
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Physical Parameters
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Discovery Circumstances
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Close-Approach Data
]
2019-Dec-12 13:51 UT
(server date/time)
Site Manager:
Ryan S. Park
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Alan B. Chamberlin