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JPL Small-Body Database Browser
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48439 (1989 WR2)
Classification:
Main-belt Asteroid
SPK-ID:
2048439
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
]
[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference:
JPL 21
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.2434948698479771
3.1266e-08
a
2.683350086765421
1.5068e-08
au
q
2.029968106631917
8.1823e-08
au
i
13.2890636555997
4.7248e-06
deg
node
54.63203746493633
2.2198e-05
deg
peri
34.57875389827456
2.5581e-05
deg
M
223.8230423044505
1.2839e-05
deg
t
p
2459207.817169562014
(2020-Dec-24.31716956)
5.9765e-05
TDB
period
1605.515240920017
4.40
1.3524e-05
3.703e-08
d
yr
n
.224227083508536
1.8887e-09
deg/d
Q
3.336732066898926
1.8737e-08
au
Orbit Determination Parameters
# obs. used (total)
1350
data-arc span
11842 days (32.42 yr)
first obs. used
1987-05-30
last obs. used
2019-10-31
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.49346
source
ORB
producer
Otto Matic
solution date
2019-Nov-07 06:37:07
Additional Information
Earth MOID
= 1.05957 au
Jupiter MOID
= 2.00001 au
T_jup
= 3.295
[ 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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Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
13.5
n/a
MPO412506
diameter
diameter
10.499
km
0.358
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
geometric albedo
albedo
0.101
0.013
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
48439 (1989 WR2)
Discovered 1989-Nov-20 by Ueda, S., Kaneda, H. at Kushiro
Reference:
20021120/Numbers.arc
Last Updated:
2004-04-19
Alternate Designations
1989 WR2
= 1987 KR3 = 1998 XW38 = 2000 HL57
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
]
2019-Dec-16 11:17 UT
(server date/time)
Site Manager:
Ryan S. Park
Webmaster
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