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JPL Small-Body Database Browser
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243299 (2008 EN109)
Classification:
Main-belt Asteroid
SPK-ID:
2243299
[
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 12
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.1792890507415356
6.3629e-08
a
3.128029876455833
4.3833e-08
au
q
2.567208369214903
2.1926e-07
au
i
4.636191570696431
7.3887e-06
deg
node
327.2746216555832
6.4146e-05
deg
peri
327.2034866248692
6.7307e-05
deg
M
242.2183356238763
1.7964e-05
deg
t
p
2459261.619476820055
(2021-Feb-16.11947682)
0.00010453
TDB
period
2020.713605261865
5.53
4.2475e-05
1.163e-07
d
yr
n
.1781548850181307
3.7447e-09
deg/d
Q
3.688851383696762
5.1692e-08
au
Orbit Determination Parameters
# obs. used (total)
201
data-arc span
21338 days (58.42 yr)
first obs. used
1960-09-25
last obs. used
2019-02-26
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.57113
source
ORB
producer
Otto Matic
solution date
2019-Jul-14 10:28:52
Additional Information
Earth MOID
= 1.55209 au
Jupiter MOID
= 1.53897 au
T_jup
= 3.184
[ show covariance matrix ]
[
Ephemeris
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Orbit Diagram
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Orbital Elements
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Mission Design
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Physical Parameters
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Discovery Circumstances
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Close-Approach Data
]
Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
16.0
n/a
MPO345602
diameter
diameter
4.424
km
0.179
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
geometric albedo
albedo
0.036
0.006
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
243299 (2008 EN109)
Discovered 2008-Mar-07 by Mt. Lemmon Survey at Mount Lemmon
Reference:
20100626/Numbers.arc
Last Updated:
2010-06-28
[ show close-approach data ]
[
Ephemeris
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Orbit Diagram
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Orbital Elements
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Mission Design
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Physical Parameters
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Discovery Circumstances
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Close-Approach Data
]
2019-Dec-13 08:07 UT
(server date/time)
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Ryan S. Park
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