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JPL Small-Body Database Browser
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249655 (1999 TW317)
Classification:
Main-belt Asteroid
SPK-ID:
2249655
[
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 11
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.06641501325089133
7.5013e-08
a
3.084211769993277
3.7861e-08
au
q
2.879373804420618
2.417e-07
au
i
9.133277857502129
1.0946e-05
deg
node
356.1692333552281
3.8664e-05
deg
peri
49.79156625266752
8.5343e-05
deg
M
183.9419934484066
7.7617e-05
deg
t
p
2459568.037912316046
(2021-Dec-19.53791232)
0.00043383
TDB
period
1978.402773359267
5.42
3.6429e-05
9.974e-08
d
yr
n
.1819649693417741
3.3506e-09
deg/d
Q
3.289049735565935
4.0375e-08
au
Orbit Determination Parameters
# obs. used (total)
246
data-arc span
7166 days (19.62 yr)
first obs. used
1999-10-12
last obs. used
2019-05-26
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.56299
source
ORB
producer
Otto Matic
solution date
2019-Sep-24 04:18:55
Additional Information
Earth MOID
= 1.89649 au
Jupiter MOID
= 2.00323 au
T_jup
= 3.204
[ 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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Close-Approach Data
]
Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
15.5
n/a
MPO437159
diameter
diameter
3.283
km
0.635
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
geometric albedo
albedo
0.103
0.137
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
249655 (1999 TW317)
Discovered 1999-Oct-12 by Spacewatch at Kitt Peak
Reference:
20100923/Numbers.arc
Last Updated:
2010-09-27
[ show close-approach data ]
Alternate Designations
1999 TW317
= 2002 EX48
[
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
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2019-Dec-10 00:20 UT
(server date/time)
Site Manager:
Ryan S. Park
Webmaster
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