+ 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
]
379946 (2012 MD9)
Classification:
Main-belt Asteroid
SPK-ID:
2379946
[
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
.12661823176888
4.5575e-08
a
2.31061756736406
1.7674e-08
au
q
2.018051256690311
1.1102e-07
au
i
5.950185893054477
6.0727e-06
deg
node
229.5195405222695
4.1634e-05
deg
peri
68.96146247354298
5.1012e-05
deg
M
306.0358710340597
2.5669e-05
deg
t
p
2458792.806163581982
(2019-Nov-05.30616358)
9.1003e-05
TDB
period
1282.893288858762
3.51
1.472e-05
4.03e-08
d
yr
n
.2806157013419637
3.2197e-09
deg/d
Q
2.603183878037808
1.9912e-08
au
Orbit Determination Parameters
# obs. used (total)
153
data-arc span
6159 days (16.86 yr)
first obs. used
2002-09-13
last obs. used
2019-07-25
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.56256
source
ORB
producer
Otto Matic
solution date
2019-Sep-24 06:57:40
Additional Information
Earth MOID
= 1.01082 au
Jupiter MOID
= 2.57405 au
T_jup
= 3.567
[ 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
17.8
n/a
MPO339192
379946 (2012 MD9)
Discovered 2005-Jun-27 by Spacewatch at Kitt Peak
Reference:
Last Updated:
2013-11-20
[ show close-approach data ]
Alternate Designations
2012 MD9
= 2005 MF44
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
|
Close-Approach Data
]
2019-Dec-10 00:55 UT
(server date/time)
Site Manager:
Ryan S. Park
Webmaster
:
Alan B. Chamberlin