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JPL Small-Body Database Browser
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305954 (2009 HQ39)
Classification:
Main-belt Asteroid
SPK-ID:
2305954
[
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 13
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.148816170766336
4.2541e-08
a
2.530775574440136
2.1882e-08
au
q
2.15415524438298
1.1241e-07
au
i
2.859469833646608
4.4052e-06
deg
node
145.7319248811762
0.00016007
deg
peri
19.72163698301589
0.00016234
deg
M
222.9511259459873
3.0592e-05
deg
t
p
2459160.324433578118
(2020-Nov-06.82443358)
0.00012744
TDB
period
1470.546894159044
4.03
1.9072e-05
5.222e-08
d
yr
n
.2448068820041756
3.175e-09
deg/d
Q
2.907395904497291
2.5138e-08
au
Orbit Determination Parameters
# obs. used (total)
219
data-arc span
5311 days (14.54 yr)
first obs. used
2005-05-14
last obs. used
2019-11-28
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.59084
source
ORB
producer
Otto Matic
solution date
2019-Dec-04 21:14:33
Additional Information
Earth MOID
= 1.16226 au
Jupiter MOID
= 2.06642 au
T_jup
= 3.434
[ show covariance matrix ]
[
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
|
Close-Approach Data
]
Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
16.6
n/a
MPO455254
305954 (2009 HQ39)
Discovered 2009-Apr-18 by Spacewatch at Kitt Peak
Reference:
20111110/Numbers.arc
Last Updated:
2011-11-14
[ show close-approach data ]
Alternate Designations
2009 HQ39
= 2006 QP86 = 2009 KD4
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
|
Close-Approach Data
]
2019-Dec-06 23:19 UT
(server date/time)
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