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JPL Small-Body Database Browser
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74186 (1998 RJ40)
Classification:
Main-belt Asteroid
SPK-ID:
2074186
[
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 23
(heliocentric ecliptic J2000)
Element
Value
Uncertainty (1-sigma)
Units
e
.05775173533737202
3.9868e-08
a
2.335050845653434
9.236e-09
au
q
2.200197607215951
9.1453e-08
au
i
7.183280136600424
4.0535e-06
deg
node
125.9453328055322
2.9768e-05
deg
peri
351.3022521255188
4.764e-05
deg
M
157.6623915054818
3.9344e-05
deg
t
p
2458029.720260903841
(2017-Oct-03.22026090)
0.00014072
TDB
period
1303.295631333061
3.57
7.7325e-06
2.117e-08
d
yr
n
.2762228241583055
1.6388e-09
deg/d
Q
2.469904084090918
9.7694e-09
au
Orbit Determination Parameters
# obs. used (total)
1289
data-arc span
7731 days (21.17 yr)
first obs. used
1998-08-23
last obs. used
2019-10-23
planetary ephem.
DE431
SB-pert. ephem.
SB431-N16
condition code
0
norm. resid. RMS
.54184
source
ORB
producer
Otto Matic
solution date
2019-Nov-07 08:50:33
Additional Information
Earth MOID
= 1.21682 au
Jupiter MOID
= 2.56773 au
T_jup
= 3.555
[ 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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Discovery Circumstances
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Physical Parameter Table
Parameter
Symbol
Value
Units
Sigma
Reference
Notes
absolute magnitude
H
14.9
n/a
MPO296658
diameter
diameter
2.895
km
0.591
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
geometric albedo
albedo
0.231
0.047
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)
74186 (1998 RJ40)
Discovered 1998-Sep-14 by LINEAR at Socorro
Reference:
20040415/Numbers.arc
Last Updated:
2004-04-19
Alternate Designations
1998 RJ40
= 1999 XW33
[
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
]
2019-Dec-14 16:33 UT
(server date/time)
Site Manager:
Ryan S. Park
Webmaster
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Alan B. Chamberlin