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JPL Small-Body Database Browser
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74994 (1999 TH271)
Classification:
Main-belt Asteroid
SPK-ID:
2074994
[
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 16
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.2243554145063064
4.9061e-08
a
2.263735438909388
1.2189e-08
au
q
1.755854136180257
1.1082e-07
au
i
5.356806841840397
5.4247e-06
deg
node
302.1996530818049
6.2906e-05
deg
peri
2.105844516702402
6.4585e-05
deg
M
322.4999064885504
1.852e-05
deg
t
p
2458730.088595072683
(2019-Sep-03.58859507)
6.4557e-05
TDB
period
1244.047410493042
3.41
1.0048e-05
2.751e-08
d
yr
n
.2893780389425228
2.3373e-09
deg/d
Q
2.771616741638518
1.4924e-08
au
Orbit Determination Parameters
# obs. used (total)
585
data-arc span
9250 days (25.33 yr)
first obs. used
1994-01-07
last obs. used
2019-05-06
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.58057
source
ORB
producer
Otto Matic
solution date
2019-May-30 05:42:21
Additional Information
Earth MOID
= .739885 au
Jupiter MOID
= 2.47332 au
T_jup
= 3.579
[ 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
15.8
n/a
MPO436308
74994 (1999 TH271)
Discovered 1999-Oct-03 by LINEAR at Socorro
Reference:
20040415/Numbers.arc
Last Updated:
2004-04-19
[ show close-approach data ]
Alternate Designations
1999 TH271
= 1994 AT7
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
|
Close-Approach Data
]
2019-Dec-12 06:49 UT
(server date/time)
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