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JPL Small-Body Database Browser
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305965 (2009 HJ57)
Classification:
Main-belt Asteroid
SPK-ID:
2305965
[
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 10
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.1262781864261926
1.229e-07
a
3.017112659979176
6.0792e-08
au
q
2.636117145033499
4.0385e-07
au
i
11.33115331311899
8.5441e-06
deg
node
189.1593527694925
2.8768e-05
deg
peri
24.61396881568556
4.075e-05
deg
M
322.3023061327433
3.8031e-05
deg
t
p
2458800.946279734575
(2019-Nov-13.44627973)
0.00020681
TDB
period
1914.192973144284
5.24
5.7854e-05
1.584e-07
d
yr
n
.1880688128369097
5.6841e-09
deg/d
Q
3.398108174924852
6.8469e-08
au
Orbit Determination Parameters
# obs. used (total)
159
data-arc span
5451 days (14.92 yr)
first obs. used
2004-05-19
last obs. used
2019-04-22
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.61557
source
ORB
producer
Otto Matic
solution date
2019-Jul-14 12:11:49
Additional Information
Earth MOID
= 1.63584 au
Jupiter MOID
= 1.5729 au
T_jup
= 3.206
[ 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
|
Close-Approach Data
]
Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
16.1
n/a
MPO433971
diameter
diameter
3.825
km
0.766
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
geometric albedo
albedo
0.048
0.050
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
305965 (2009 HJ57)
Discovered 2009-Apr-22 by La Sagra at La Sagra
Reference:
20111110/Numbers.arc
Last Updated:
2011-11-14
[ show close-approach data ]
Alternate Designations
2009 HJ57
= 2004 KF11
[
Ephemeris
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Orbit Diagram
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Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
|
Close-Approach Data
]
2019-Dec-08 05:45 UT
(server date/time)
Site Manager:
Ryan S. Park
Webmaster
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