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JPL Small-Body Database Browser
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109498 (2001 QR231)
Classification:
Main-belt Asteroid
SPK-ID:
2109498
[
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 18
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.1962878618900563
3.8663e-08
a
3.065507514483981
1.8845e-08
au
q
2.46378559885802
1.2216e-07
au
i
15.86596792628067
6.3241e-06
deg
node
191.6379591697534
1.6987e-05
deg
peri
275.158924782488
2.4039e-05
deg
M
351.7076384841988
1.6047e-05
deg
t
p
2458645.657275460311
(2019-Jun-11.15727546)
8.7446e-05
TDB
period
1960.433000265931
5.37
1.8077e-05
4.949e-08
d
yr
n
.1836329014820534
1.6933e-09
deg/d
Q
3.667229430109943
2.2544e-08
au
Orbit Determination Parameters
# obs. used (total)
1024
data-arc span
7514 days (20.57 yr)
first obs. used
1999-05-12
last obs. used
2019-12-07
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.51827
source
ORB
producer
Otto Matic
solution date
2019-Dec-14 09:06:25
Additional Information
Earth MOID
= 1.54105 au
Jupiter MOID
= 1.7773 au
T_jup
= 3.145
[ 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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Close-Approach Data
]
Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
14.0
n/a
MPO251085
diameter
diameter
7.747
km
0.229
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
geometric albedo
albedo
0.047
0.011
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
109498 (2001 QR231)
Discovered 2001-Aug-24 by LONEOS at Anderson Mesa
Reference:
20051019/Numbers.arc
Last Updated:
2005-10-26
[ show close-approach data ]
Alternate Designations
2001 QR231
= 2002 XV84
[
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
]
2019-Dec-15 11:26 UT
(server date/time)
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Ryan S. Park
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