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120409 (2178 P-L)
Classification:
Main-belt Asteroid
SPK-ID:
2120409
[
Ephemeris
|
Orbit Diagram
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Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
|
Close-Approach Data
]
[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference:
JPL 14
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.2227573914163131
3.4259e-08
a
2.409128372853016
8.8864e-09
au
q
1.872477220929252
8.146e-08
au
i
6.282330840631704
6.6146e-06
deg
node
349.5795928508521
4.4731e-05
deg
peri
316.1364883395984
4.8731e-05
deg
M
82.40404375914065
1.9464e-05
deg
t
p
2458887.867327008669
(2020-Feb-08.36732701)
7.2922e-05
TDB
period
1365.803874939023
3.74
7.5569e-06
2.069e-08
d
yr
n
.2635810357589389
1.4584e-09
deg/d
Q
2.945779524776782
1.0866e-08
au
Orbit Determination Parameters
# obs. used (total)
450
data-arc span
22024 days (60.30 yr)
first obs. used
1960-09-24
last obs. used
2021-01-11
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.59022
source
ORB
producer
Otto Matic
solution date
2021-Feb-24 09:24:57
Additional Information
Earth MOID
= .861874 au
Jupiter MOID
= 2.33663 au
T_jup
= 3.479
[ show covariance matrix ]
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Ephemeris
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Orbit Diagram
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Orbital Elements
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Physical Parameters
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Close-Approach Data
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Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
16.6
n/a
MPO469248
120409 (2178 P-L)
Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference:
20051116/Numbers.arc
Last Updated:
2005-11-21
[ show close-approach data ]
Alternate Designations
2178 P-L
= 2000 EJ177
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
|
Close-Approach Data
]
2021-Mar-03 19:37 UT
(server date/time)
Site Manager:
Ryan S. Park
Webmaster
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