+ 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
]
109471 (2001 QH218)
Classification:
Main-belt Asteroid
SPK-ID:
2109471
[
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 11
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.2060675955633364
8.2235e-08
a
2.464156526969366
1.9932e-08
au
q
1.956373716365087
1.9558e-07
au
i
3.444748466435873
5.5842e-06
deg
node
136.0426281390916
0.00012766
deg
peri
233.4945397247986
0.00012863
deg
M
184.2434687813941
2.5746e-05
deg
t
p
2459290.278789586981
(2021-Mar-16.77878959)
0.00010867
TDB
period
1412.8656416327
3.87
1.7142e-05
4.693e-08
d
yr
n
.2548012984334349
3.0915e-09
deg/d
Q
2.971939337573645
2.4039e-08
au
Orbit Determination Parameters
# obs. used (total)
417
data-arc span
9445 days (25.86 yr)
first obs. used
1993-06-22
last obs. used
2019-05-02
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.5616
source
ORB
producer
Otto Matic
solution date
2019-Jul-13 09:31:25
Additional Information
Earth MOID
= .957161 au
Jupiter MOID
= 2.48878 au
T_jup
= 3.456
[ 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
16.4
n/a
MPO233971
109471 (2001 QH218)
Discovered 2001-Aug-23 by LONEOS at Anderson Mesa
Reference:
20051019/Numbers.arc
Last Updated:
2005-10-26
Alternate Designations
2001 QH218
= 1999 BW28
[
Ephemeris
|
Orbit Diagram
|
Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
]
2019-Dec-10 19:09 UT
(server date/time)
Site Manager:
Ryan S. Park
Webmaster
:
Alan B. Chamberlin