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JPL Small-Body Database Browser
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117239 (2004 SM18)
Classification:
Outer Main-belt Asteroid
SPK-ID:
2117239
[
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 15
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.104767789535467
5.2777e-08
a
3.20701893883684
2.8952e-08
au
q
2.871026653616525
1.7084e-07
au
i
3.89317549180773
5.3492e-06
deg
node
236.386097670258
7.1873e-05
deg
peri
324.471784234054
7.5142e-05
deg
M
15.62722528319192
2.287e-05
deg
t
p
2458509.439488374956
(2019-Jan-25.93948838)
0.00013301
TDB
period
2097.7354322955
5.74
2.8406e-05
7.777e-08
d
yr
n
.1716136336630692
2.3239e-09
deg/d
Q
3.543011224057155
3.1985e-08
au
Orbit Determination Parameters
# obs. used (total)
496
data-arc span
9276 days (25.40 yr)
first obs. used
1993-12-17
last obs. used
2019-05-11
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.55509
source
ORB
producer
Otto Matic
solution date
2019-May-30 06:54:34
Additional Information
Earth MOID
= 1.86946 au
Jupiter MOID
= 1.43839 au
T_jup
= 3.180
[ show covariance matrix ]
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Ephemeris
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Orbit Diagram
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Orbital Elements
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Physical Parameters
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Close-Approach Data
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Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
14.8
n/a
MPO436562
diameter
diameter
6.040
km
1.405
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)
geometric albedo
albedo
0.048
0.034
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)
117239 (2004 SM18)
Discovered 2004-Sep-17 by Spacewatch at Kitt Peak
Reference:
20051019/Numbers.arc
Last Updated:
2005-10-26
[ show close-approach data ]
Alternate Designations
2004 SM18
= 2002 JZ142
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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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Close-Approach Data
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2019-Dec-08 08:33 UT
(server date/time)
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Ryan S. Park
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