+ View the NASA Portal
+ Center for Near-Earth Object Studies
IMPORTANT:
The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.
Please visit
this page
for more details.
Don't show this message again
JPL Small-Body Database Browser
Search:
[
help
]
392239 (2009 WP12)
Classification:
Jupiter Trojan
SPK-ID:
2392239
[
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 11
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.04629010075336029
1.4783e-07
a
5.15774671117503
3.3647e-07
au
q
4.918994096254425
9.9079e-07
au
i
8.526000100671032
8.3241e-06
deg
node
75.61423562781118
8.1528e-05
deg
peri
272.2284601789334
0.00017474
deg
M
352.9251478830525
0.00014243
deg
t
p
2458684.582053300048
(2019-Jul-20.08205330)
0.001687
TDB
period
4278.469526664498
11.71
0.00041866
1.146e-06
d
yr
n
.08414223772224846
8.2336e-09
deg/d
Q
5.396499326095635
3.5204e-07
au
Orbit Determination Parameters
# obs. used (total)
91
data-arc span
4004 days (10.96 yr)
first obs. used
2008-10-07
last obs. used
2019-09-24
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.61248
source
ORB
producer
Otto Matic
solution date
2019-Nov-08 13:03:56
Additional Information
Earth MOID
= 3.9252 au
Jupiter MOID
= .0528987 au
T_jup
= 2.976
[ show covariance matrix ]
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
]
Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
14.1
n/a
MPO455784
392239 (2009 WP12)
Discovered 2009-Nov-16 by Mt. Lemmon Survey at Mount Lemmon
Reference:
Last Updated:
2014-04-17
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
]
2019-Dec-09 07:49 UT
(server date/time)
Site Manager:
Ryan S. Park
Webmaster
:
Alan B. Chamberlin