+ 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
]
109138 (2001 QF55)
Classification:
Main-belt Asteroid
SPK-ID:
2109138
[
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
.3192881943354104
7.5519e-08
a
2.564237581285961
1.922e-08
au
q
1.745506794110167
1.8359e-07
au
i
4.359256443422741
5.1742e-06
deg
node
1.315496824935278
6.5982e-05
deg
peri
12.77985787308284
6.6878e-05
deg
M
87.71737268978104
1.9481e-05
deg
t
p
2458235.057601489684
(2018-Apr-26.55760149)
7.7494e-05
TDB
period
1499.808526287978
4.11
1.6863e-05
4.617e-08
d
yr
n
.2400306397050555
2.6987e-09
deg/d
Q
3.382968368461756
2.5357e-08
au
Orbit Determination Parameters
# obs. used (total)
513
data-arc span
8740 days (23.93 yr)
first obs. used
1995-03-02
last obs. used
2019-02-04
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.61431
source
ORB
producer
Otto Matic
solution date
2019-Jul-13 09:12:53
Additional Information
Earth MOID
= .745779 au
Jupiter MOID
= 2.08352 au
T_jup
= 3.356
[ 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
MPO459509
109138 (2001 QF55)
Discovered 2001-Aug-16 by LINEAR at Socorro
Reference:
20051019/Numbers.arc
Last Updated:
2005-10-26
[ show close-approach data ]
Alternate Designations
2001 QF55
= 1995 EN9
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
|
Close-Approach Data
]
2019-Dec-11 06:23 UT
(server date/time)
Site Manager:
Ryan S. Park
Webmaster
:
Alan B. Chamberlin