+ 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
]
344845 (2004 GJ18)
Classification:
Inner Main-belt Asteroid
SPK-ID:
2344845
[
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
.04937392281476729
7.8537e-08
a
1.877438585543097
1.2805e-08
au
q
1.784742077731027
1.4438e-07
au
i
22.64414098660131
7.5381e-06
deg
node
181.0474689622754
1.7366e-05
deg
peri
78.47586137519349
7.3468e-05
deg
M
262.3274350121118
6.794e-05
deg
t
p
2458855.427758882304
(2020-Jan-06.92775888)
0.00017685
TDB
period
939.6087141666643
2.57
9.6128e-06
2.632e-08
d
yr
n
.3831382090993938
3.9198e-09
deg/d
Q
1.970135093355168
1.3437e-08
au
Orbit Determination Parameters
# obs. used (total)
193
data-arc span
5878 days (16.09 yr)
first obs. used
2002-10-01
last obs. used
2018-11-04
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.61378
source
ORB
producer
Otto Matic
solution date
2019-Jul-13 18:23:44
Additional Information
Earth MOID
= .842862 au
Jupiter MOID
= 3.05013 au
T_jup
= 3.879
[ show covariance matrix ]
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
|
Close-Approach Data
]
Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
17.6
n/a
MPO418779
344845 (2004 GJ18)
Discovered 2004-Apr-12 by CSS at Catalina
Reference:
20121128/Numbers.arc
Last Updated:
2012-12-03
[ show close-approach data ]
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
|
Close-Approach Data
]
2019-Dec-15 19:33 UT
(server date/time)
Site Manager:
Ryan S. Park
Webmaster
:
Alan B. Chamberlin