+ View the NASA Portal
+ Center for Near-Earth Object Studies
IMPORTANT:
The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.
Please visit
this page
for more details.
Don't show this message again
JPL Small-Body Database Browser
Search:
[
help
]
249331 (2008 UB355)
Classification:
Outer Main-belt Asteroid
SPK-ID:
2249331
[
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 13
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.1323535504886097
5.487e-08
a
3.209247367637273
4.7595e-08
au
q
2.784492084134256
1.8165e-07
au
i
5.355670601973772
5.6257e-06
deg
node
60.27292183596091
6.1923e-05
deg
peri
152.9326801035941
6.5838e-05
deg
M
141.1266109683962
2.446e-05
deg
t
p
2457777.291911383461
(2017-Jan-23.79191138)
0.00013319
TDB
period
2099.922260361793
5.75
4.6715e-05
1.279e-07
d
yr
n
.1714349177564202
3.8137e-09
deg/d
Q
3.634002651140291
5.3895e-08
au
Orbit Determination Parameters
# obs. used (total)
243
data-arc span
5348 days (14.64 yr)
first obs. used
2005-03-08
last obs. used
2019-10-29
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.65519
source
ORB
producer
Otto Matic
solution date
2019-Nov-08 02:45:13
Additional Information
Earth MOID
= 1.7796 au
Jupiter MOID
= 1.33703 au
T_jup
= 3.171
[ show covariance matrix ]
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
|
Close-Approach Data
]
Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
15.5
n/a
MPO454848
diameter
diameter
3.426
km
0.122
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
geometric albedo
albedo
0.125
0.024
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
249331 (2008 UB355)
Discovered 2008-Oct-31 by Spacewatch at Kitt Peak
Reference:
20100824/Numbers.arc
Last Updated:
2010-08-27
[ show close-approach data ]
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
|
Close-Approach Data
]
2019-Dec-15 21:47 UT
(server date/time)
Site Manager:
Ryan S. Park
Webmaster
:
Alan B. Chamberlin