+ 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
]
243641 (1999 TN61)
Classification:
Main-belt Asteroid
SPK-ID:
2243641
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
]
[ 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
.05823934371031855
4.8705e-08
a
2.550441439405312
2.1379e-08
au
q
2.401905403802747
1.3049e-07
au
i
13.78571169868749
8.7986e-06
deg
node
357.880018443796
1.841e-05
deg
peri
274.753144729928
0.00012001
deg
M
11.82912290200233
0.00011209
deg
t
p
2458551.615463205070
(2019-Mar-09.11546321)
0.00046331
TDB
period
1487.720889534066
4.07
1.8706e-05
5.121e-08
d
yr
n
.2419808732488438
3.0426e-09
deg/d
Q
2.698977475007878
2.2624e-08
au
Orbit Determination Parameters
# obs. used (total)
227
data-arc span
6773 days (18.54 yr)
first obs. used
1999-10-07
last obs. used
2018-04-23
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.65252
source
ORB
producer
Otto Matic
solution date
2018-May-07 06:25:56
Additional Information
Earth MOID
= 1.43351 au
Jupiter MOID
= 2.40422 au
T_jup
= 3.398
[ show covariance matrix ]
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
]
Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
16.1
n/a
MPO437137
243641 (1999 TN61)
Discovered 1999-Oct-07 by Spacewatch at Kitt Peak
Reference:
20100726/Numbers.arc
Last Updated:
2010-07-28
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
]
2019-Dec-15 10:39 UT
(server date/time)
Site Manager:
Ryan S. Park
Webmaster
:
Alan B. Chamberlin