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JPL Small-Body Database Browser
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48399 (1981 EA21)
Classification:
Main-belt Asteroid
SPK-ID:
2048399
[
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 19
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.04089330178342458
3.8927e-08
a
2.80681162341388
1.4744e-08
au
q
2.692031828648393
1.0822e-07
au
i
.8186618633060814
3.9566e-06
deg
node
314.8457833876244
0.0003064
deg
peri
218.159259297921
0.0003104
deg
M
41.57060813132344
4.8981e-05
deg
t
p
2458402.163701702765
(2018-Oct-10.66370170)
0.00023379
TDB
period
1717.585346874056
4.70
1.3534e-05
3.705e-08
d
yr
n
.2095965715212855
1.6515e-09
deg/d
Q
2.921591418179368
1.5347e-08
au
Orbit Determination Parameters
# obs. used (total)
981
data-arc span
13970 days (38.25 yr)
first obs. used
1981-02-09
last obs. used
2019-05-11
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.5239
source
ORB
producer
Otto Matic
solution date
2019-May-30 04:38:02
Additional Information
Earth MOID
= 1.69699 au
Jupiter MOID
= 2.04326 au
T_jup
= 3.321
[ show covariance matrix ]
[
Ephemeris
|
Orbit Diagram
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Orbital Elements
|
Mission Design
|
Physical Parameters
|
Discovery Circumstances
|
Close-Approach Data
]
Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
14.9
n/a
MPO257193
48399 (1981 EA21)
Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference:
20021120/Numbers.arc
Last Updated:
2004-04-19
[ 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
1902-Mar-26 15:06
00:06
Iris
0.0329371239377203
0.0329252517786575
0.0329489973535869
3.80927034302729
3.80927029720829
2415835.129065500
6.28078345438816
673.483185873792
50.7991343321852
-28.626837792382
46883.0450998648
T
19
CATAB v2.0e-lin.ifort 2019-May-30 04:38:12
2019-May-30 04:38
1972-Nov-14 04:25
00:07
Hygie
0.0481564481973892
0.0481523377378879
0.0481605587132826
1.40754848780612
1.40754791779319
2441635.683783839
7.1752345091667
218.612665035563
29.1495908105536
-22.4058592669321
97610.2778300538
T
19
CATAB v2.0e-lin.ifort 2019-May-30 04:38:12
2019-May-30 04:38
1976-Aug-15 10:28
00:02
Amphi
0.0382596223208188
0.0382572829108159
0.0382619622243693
2.04055317609635
2.04055310246132
2443005.936241559
2.07294472626004
254.122248214354
33.6842856495691
63.7474602174284
152417.008493823
T
19
CATAB v2.0e-lin.ifort 2019-May-30 04:38:12
2019-May-30 04:38
2184-Jun-12 15:24
00:32
Hygie
0.046206574984345
0.0461868936125787
0.0462262593867616
1.49113908846219
1.49113852769761
2518913.141423178
32.3753131125643
1134.71938125058
33.9938583411032
-31.1215725336507
103903.641520438
T
19
CATAB v2.0e-lin.ifort 2019-May-30 04:38:12
2019-May-30 04:38
Alternate Designations
1981 EA21
= 2000 GQ29
[
Ephemeris
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Orbit Diagram
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Orbital Elements
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Mission Design
|
Physical Parameters
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Discovery Circumstances
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Close-Approach Data
]
2019-Dec-11 19:48 UT
(server date/time)
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