+ 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
]
74701 (1999 RT145)
Classification:
Main-belt Asteroid
SPK-ID:
2074701
[
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 18
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.2323888469544236
4.5649e-08
a
2.315676638151473
1.0966e-08
au
q
1.777539214292156
1.038e-07
au
i
3.282305985086214
5.1263e-06
deg
node
281.8314724956427
0.00010106
deg
peri
112.1538319890726
0.00010201
deg
M
171.4568477103059
1.5294e-05
deg
t
p
2457987.489896790878
(2017-Aug-21.98989679)
5.2038e-05
TDB
period
1287.10891458912
3.52
9.1423e-06
2.503e-08
d
yr
n
.2796966099134833
1.9867e-09
deg/d
Q
2.85381406201079
1.3514e-08
au
Orbit Determination Parameters
# obs. used (total)
477
data-arc span
14742 days (40.36 yr)
first obs. used
1978-11-28
last obs. used
2019-04-09
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.5849
source
ORB
producer
Otto Matic
solution date
2019-Jul-13 08:07:46
Additional Information
Earth MOID
= .786616 au
Jupiter MOID
= 2.59128 au
T_jup
= 3.543
[ 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
16.0
n/a
MPO436305
74701 (1999 RT145)
Discovered 1999-Sep-09 by LINEAR at Socorro
Reference:
20040415/Numbers.arc
Last Updated:
2004-04-19
[ show close-approach data ]
Alternate Designations
1999 RT145
= 1978 WC21
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
|
Close-Approach Data
]
2019-Dec-05 16:09 UT
(server date/time)
Site Manager:
Ryan S. Park
Webmaster
:
Alan B. Chamberlin