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JPL Small-Body Database Browser
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71204 (1999 XQ242)
Classification:
Main-belt Asteroid
SPK-ID:
2071204
[
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
.2069496084181984
3.8725e-08
a
2.664460786473524
1.49e-08
au
q
2.113051670067183
1.0082e-07
au
i
14.19661063666034
6.0003e-06
deg
node
36.67132551619
1.7436e-05
deg
peri
123.4737179926117
2.282e-05
deg
M
124.0653589489255
1.4337e-05
deg
t
p
2458053.029828430102
(2017-Oct-26.52982843)
6.2171e-05
TDB
period
1588.592202004588
4.35
1.3325e-05
3.648e-08
d
yr
n
.2266157416269127
1.9009e-09
deg/d
Q
3.215869902879864
1.7983e-08
au
Orbit Determination Parameters
# obs. used (total)
1033
data-arc span
11539 days (31.59 yr)
first obs. used
1987-01-03
last obs. used
2018-08-07
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.47732
source
ORB
producer
Otto Matic
solution date
2018-Oct-04 02:13:54
Additional Information
Earth MOID
= 1.15464 au
Jupiter MOID
= 1.86083 au
T_jup
= 3.310
[ 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
14.1
n/a
MPO449449
diameter
diameter
4.835
km
0.425
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
geometric albedo
albedo
0.228
0.057
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
71204 (1999 XQ242)
Discovered 1999-Dec-13 by LINEAR at Socorro
Reference:
20031109/Numbers.arc
Last Updated:
2004-04-19
[ show close-approach data ]
Alternate Designations
1999 XQ242
= 1987 AG = 1998 SK11
[
Ephemeris
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Orbit Diagram
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Orbital Elements
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Mission Design
|
Physical Parameters
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Discovery Circumstances
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Close-Approach Data
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2019-Dec-06 18:17 UT
(server date/time)
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Ryan S. Park
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