+ 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
]
312957 (1997 JQ9)
Classification:
Main-belt Asteroid
SPK-ID:
2312957
[
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
.1186422199830151
5.2506e-08
a
3.092777312235016
4.1007e-08
au
q
2.725843345998351
1.7333e-07
au
i
14.05423584240619
1.3944e-05
deg
node
133.4655732458951
2.4892e-05
deg
peri
96.55424057013988
9.7297e-05
deg
M
17.36473360614973
8.7776e-05
deg
t
p
2458504.673190786511
(2019-Jan-21.17319079)
0.00048347
TDB
period
1986.65018993662
5.44
3.9512e-05
1.082e-07
d
yr
n
.1812095565810129
3.604e-09
deg/d
Q
3.45971127847168
4.5873e-08
au
Orbit Determination Parameters
# obs. used (total)
147
data-arc span
8093 days (22.16 yr)
first obs. used
1997-05-06
last obs. used
2019-07-03
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.43059
source
ORB
producer
Otto Matic
solution date
2019-Sep-24 06:02:35
Additional Information
Earth MOID
= 1.76111 au
Jupiter MOID
= 1.76339 au
T_jup
= 3.168
[ 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
16.1
n/a
MPO437381
312957 (1997 JQ9)
Discovered 1997-May-06 by Spacewatch at Kitt Peak
Reference:
20120207/Numbers.arc
Last Updated:
2012-02-09
[ show close-approach data ]
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
|
Close-Approach Data
]
2019-Dec-14 08:56 UT
(server date/time)
Site Manager:
Ryan S. Park
Webmaster
:
Alan B. Chamberlin