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JPL Small-Body Database Browser
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146772 (2001 XD221)
Classification:
Main-belt Asteroid
SPK-ID:
2146772
[
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 16
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.05474010416346374
4.8764e-08
a
2.770576968555566
2.3035e-08
au
q
2.618915296703941
1.4207e-07
au
i
4.380626102050911
6.2467e-06
deg
node
18.25158660911794
5.7094e-05
deg
peri
113.28885417
7.9116e-05
deg
M
205.1077890356404
5.5044e-05
deg
t
p
2459325.237668681619
(2021-Apr-20.73766868)
0.00025924
TDB
period
1684.433058970387
4.61
2.1007e-05
5.751e-08
d
yr
n
.2137217612079229
2.6654e-09
deg/d
Q
2.922238640407191
2.4296e-08
au
Orbit Determination Parameters
# obs. used (total)
312
data-arc span
6981 days (19.11 yr)
first obs. used
2000-09-21
last obs. used
2019-11-02
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.59378
source
ORB
producer
Otto Matic
solution date
2019-Dec-04 13:01:22
Additional Information
Earth MOID
= 1.63734 au
Jupiter MOID
= 2.08831 au
T_jup
= 3.331
[ 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
16.1
n/a
MPO459680
diameter
diameter
3.515
km
0.612
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
geometric albedo
albedo
0.047
0.018
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
146772 (2001 XD221)
Discovered 2001-Dec-15 by LINEAR at Socorro
Reference:
20070106/Numbers.arc
Last Updated:
2007-01-09
[ show close-approach data ]
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Orbit Diagram
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Orbital Elements
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Close-Approach Data
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2019-Dec-10 22:14 UT
(server date/time)
Site Manager:
Ryan S. Park
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Alan B. Chamberlin