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20946 (2316 T-2)
Classification:
Main-belt Asteroid
SPK-ID:
2020946
[
Ephemeris
|
Orbit Diagram
|
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 24
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.03575584068554
2.7936e-08
a
2.212258751188005
5.8635e-09
au
q
2.133157579725335
6.1925e-08
au
i
2.826310334981758
3.776e-06
deg
node
178.9441770830381
5.96e-05
deg
peri
312.9732066100186
8.1286e-05
deg
M
7.190359409452854
5.4716e-05
deg
t
p
2459176.495071992970
(2020-Nov-22.99507199)
0.00018266
TDB
period
1201.855650104221
3.29
4.7782e-06
1.308e-08
d
yr
n
.2995368037490874
1.1909e-09
deg/d
Q
2.291359922650675
6.0731e-09
au
Orbit Determination Parameters
# obs. used (total)
1359
data-arc span
17334 days (47.46 yr)
first obs. used
1973-09-29
last obs. used
2021-03-15
planetary ephem.
DE441
SB-pert. ephem.
SB441-N16
condition code
0
norm. resid. RMS
.51257
source
ORB
producer
Otto Matic
solution date
2021-Apr-13 03:35:08
Additional Information
Earth MOID
= 1.14795 au
Jupiter MOID
= 2.69648 au
T_jup
= 3.654
[ show covariance matrix ]
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Ephemeris
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Orbit Diagram
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Orbital Elements
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Close-Approach Data
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Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
15.49
n/a
E2021B10
20946 (2316 T-2)
Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference:
20010109/Numbers.arc
Last Updated:
2004-04-19
[ show close-approach data ]
Alternate Designations
2316 T-2
= 1998 FM28
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
|
Close-Approach Data
]
2021-Apr-21 10:34 UT
(server date/time)
Site Manager:
Ryan S. Park
Webmaster
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Alan B. Chamberlin