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JPL Small-Body Database Browser
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305990 (2009 JR8)
Classification:
Main-belt Asteroid
SPK-ID:
2305990
[
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 12
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.1325102201755161
4.3498e-08
a
2.395479967741123
1.9884e-08
au
q
2.078054389789709
1.0941e-07
au
i
10.47305352696236
5.0899e-06
deg
node
96.37824017622853
4.0045e-05
deg
peri
11.6938556313234
5.307e-05
deg
M
357.3836635619627
3.3519e-05
deg
t
p
2458610.341886016154
(2019-May-06.84188602)
0.0001261
TDB
period
1354.213821397294
3.71
1.6861e-05
4.616e-08
d
yr
n
.2658368968857131
3.3099e-09
deg/d
Q
2.712905545692538
2.2519e-08
au
Orbit Determination Parameters
# obs. used (total)
209
data-arc span
5547 days (15.19 yr)
first obs. used
2003-11-18
last obs. used
2019-01-25
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.62685
source
ORB
producer
Otto Matic
solution date
2019-Jul-14 12:14:25
Additional Information
Earth MOID
= 1.09611 au
Jupiter MOID
= 2.42105 au
T_jup
= 3.495
[ show covariance matrix ]
[
Ephemeris
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Orbit Diagram
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Orbital Elements
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Mission Design
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Physical Parameters
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Close-Approach Data
]
Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
16.9
n/a
MPO413265
305990 (2009 JR8)
Discovered 2009-May-13 by Spacewatch at Kitt Peak
Reference:
20111110/Numbers.arc
Last Updated:
2011-11-14
[ hide close-approach data ]
Close-Approach Data
...sorted by
Date/Time (TDB)
Date/Time (TDB)
Time Uncertainty
(days_HH:MM)
Body
Nominal Distance (au)
Minimum Distance (au)
Maximum Distance (au)
V-relative (km/s)
V-infinity (km/s)
JD (TDB)
Time Uncertainty (minutes)
Semi-major axis (km)
Semi-minor axis (km)
range-LOV angle (deg)
N-sigma
BP
Orbit Ref.
Reference
Modified
1924-Jul-30 05:35
00:04
Iris
0.0203352775767132
0.0202994856644157
0.020371171997877
6.23911811292304
6.23911806761244
2423996.732968766
4.47453731254543
2896.04786941353
87.8397810154998
-51.9331783551068
27266.4491140299
T
12
CATAB v2.0e-lin.ifort 2019-Jul-14 12:14:27
2019-Jul-14 12:14
2006-Apr-25 23:54
< 00:01
Eunom
0.0490593794854155
0.0490536184797434
0.0490651405122125
7.64281407826132
7.64281404082281
2453851.496103880
0.647371871576518
292.089420703355
86.3545476877613
-10.9961108121184
29506.3278225744
T
12
CATAB v2.0e-lin.ifort 2019-Jul-14 12:14:27
2019-Jul-14 12:14
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2019-Dec-08 18:37 UT
(server date/time)
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