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JPL Small-Body Database Browser
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74968 (1999 TW212)
Classification:
Main-belt Asteroid
SPK-ID:
2074968
[
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 17
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.07606003686664028
3.4736e-08
a
2.349115890790488
1.1546e-08
au
q
2.170442049532953
8.1207e-08
au
i
5.494645001654875
4.4964e-06
deg
node
220.7000230381006
4.4757e-05
deg
peri
246.0969359508885
5.5736e-05
deg
M
75.75310466938747
3.2198e-05
deg
t
p
2458323.772049368333
(2018-Jul-24.27204937)
0.0001177
TDB
period
1315.088835793397
3.60
9.6956e-06
2.655e-08
d
yr
n
.2737457654583548
2.0182e-09
deg/d
Q
2.527789732048023
1.2424e-08
au
Orbit Determination Parameters
# obs. used (total)
768
data-arc span
7149 days (19.57 yr)
first obs. used
1999-09-30
last obs. used
2019-04-27
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.53608
source
ORB
producer
Otto Matic
solution date
2019-Jul-13 09:01:23
Additional Information
Earth MOID
= 1.19422 au
Jupiter MOID
= 2.56958 au
T_jup
= 3.549
[ show covariance matrix ]
[
Ephemeris
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Orbit Diagram
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Orbital Elements
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Mission Design
|
Physical Parameters
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Discovery Circumstances
|
Close-Approach Data
]
Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
15.7
n/a
MPO267936
74968 (1999 TW212)
Discovered 1999-Oct-15 by LINEAR at Socorro
Reference:
20040415/Numbers.arc
Last Updated:
2004-04-19
[ show close-approach data ]
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
|
Close-Approach Data
]
2019-Dec-09 07:47 UT
(server date/time)
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