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JPL Small-Body Database Browser
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173609 (2001 EC21)
Classification:
Main-belt Asteroid
SPK-ID:
2173609
[
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
.04762755707638473
5.7589e-08
a
2.275831481278126
1.4154e-08
au
q
2.167439187507318
1.3027e-07
au
i
6.449573133962858
6.5721e-06
deg
node
323.4110334647201
4.8556e-05
deg
peri
171.068740853536
8.6783e-05
deg
M
130.24311328211
6.906e-05
deg
t
p
2458146.808287689450
(2018-Jan-28.30828769)
0.00024089
TDB
period
1254.031881731997
3.43
1.1699e-05
3.203e-08
d
yr
n
.2870740411342562
2.6781e-09
deg/d
Q
2.384223775048933
1.4828e-08
au
Orbit Determination Parameters
# obs. used (total)
469
data-arc span
9353 days (25.61 yr)
first obs. used
1992-09-30
last obs. used
2018-05-10
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.55987
source
ORB
producer
Otto Matic
solution date
2019-Jul-13 12:32:18
Additional Information
Earth MOID
= 1.18169 au
Jupiter MOID
= 2.62258 au
T_jup
= 3.599
[ 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
16.4
n/a
MPO385762
173609 (2001 EC21)
Discovered 2001-Mar-15 by LONEOS at Anderson Mesa
Reference:
20080122/Numbers.arc
Last Updated:
2008-01-28
[ show close-approach data ]
[
Ephemeris
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Orbit Diagram
|
Orbital Elements
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Mission Design
|
Physical Parameters
|
Discovery Circumstances
|
Close-Approach Data
]
2019-Dec-13 21:26 UT
(server date/time)
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