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46909 (1998 RF72)
Classification: Main-belt Asteroid          SPK-ID: 2046909
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08326815995977521 2.5976e-08  
a 2.545016145663169 9.7066e-09 au
q 2.333097334145878 6.9439e-08 au
i 14.95430504343958 4.1984e-06 deg
node 178.2086343384454 1.0644e-05 deg
peri 92.37668235219121 2.9104e-05 deg
M 303.6539809956786 2.7868e-05 deg
tp 2459628.610601112747
(2022-Feb-18.11060111)
0.00011525 TDB
period 1482.976399702352
4.06
8.484e-06
2.323e-08
d
yr
n .2427550432173132 1.3888e-09 deg/d
Q 2.75693495718046 1.0515e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2142  
   data-arc span      8371 days (22.92 yr)  
   first obs. used      1998-08-28  
   last obs. used      2021-07-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47423  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 16:53:51  

Additional Information
 Earth MOID = 1.37585 au 
 Jupiter MOID = 2.36282 au 
 T_jup = 3.391 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457448.5 (2016-Mar-01.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08453343453058691 2.5892e-08  
q 2.329334145717373 6.9269e-08 au
tp 2458144.186926494894
(2018-Jan-25.68692649)
0.00011106 TDB
node 178.2447612210422 1.064e-05 deg
peri 92.20198061885856 2.8789e-05 deg
i 14.95792352662054 4.1996e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2142  
   data-arc span      8371 days (22.92 yr)  
   first obs. used      1998-08-28  
   last obs. used      2021-07-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47423  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 16:53:51  

Additional Information
 Jupiter MOID = 2.36282 au 
 T_jup = 3.391 
Orbit Covariance (6×6)
  e q tp node peri i
e 6.704143557712869E-16 -1.78036190071157E-15 -4.242893778195463E-13 1.484664225219218E-15 -7.914855962943926E-14 2.651117979638989E-15
q -1.78036190071157E-15 4.798129502015397E-15 1.355834978339616E-12 -4.869623531115063E-15 2.580541478968284E-13 -6.871726976799851E-15
tp -4.242893778195463E-13 1.355834978339616E-12 1.233490694810425E-8 -3.11770175292771E-11 2.972913387711152E-9 -3.700180464629647E-12
node 1.484664225219218E-15 -4.869623531115063E-15 -3.11770175292771E-11 1.132043975145061E-10 -1.164978301928188E-10 4.446279880603556E-12
peri -7.914855962943926E-14 2.580541478968284E-13 2.972913387711152E-9 -1.164978301928188E-10 8.287779591408442E-10 -5.091797494200202E-12
i 2.651117979638989E-15 -6.871726976799851E-15 -3.700180464629647E-12 4.446279880603556E-12 -5.091797494200202E-12 1.763692335424845E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.19   n/a MPO636727  
diameter diameter 4.100 km 0.229 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.317   0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46909 (1998 RF72)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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