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48465 (1991 RS20)
Classification: Main-belt Asteroid          SPK-ID: 2048465
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09571079489256065 3.5518e-08  
a 2.936658363768744 1.7188e-08 au
q 2.655588457444551 1.0336e-07 au
i 3.098004843498074 5.0606e-06 deg
node 52.04006881377083 0.00010731 deg
peri 22.2053594790077 0.00011298 deg
M 226.8983393257822 3.6038e-05 deg
tp 2459880.109653066392
(2022-Oct-27.60965307)
0.00018606 TDB
period 1838.139913992014
5.03
1.6137e-05
4.418e-08
d
yr
n .1958501620359047 1.7194e-09 deg/d
Q 3.217728270092937 1.8833e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1590  
   data-arc span      10565 days (28.93 yr)  
   first obs. used      1991-09-13  
   last obs. used      2020-08-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4989  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:37:15  

Additional Information
 Earth MOID = 1.67032 au 
 Jupiter MOID = 2.00805 au 
 T_jup = 3.265 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456713.5 (2014-Feb-25.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09948805417459236 3.5517e-08  
q 2.638394451093543 1.0334e-07 au
tp 2456212.522962227391
(2012-Oct-12.02296223)
0.00017014 TDB
node 52.12881860419098 0.000107 deg
peri 22.21945966486289 0.00011224 deg
i 3.10456571448204 5.0717e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1590  
   data-arc span      10565 days (28.93 yr)  
   first obs. used      1991-09-13  
   last obs. used      2020-08-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4989  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:37:15  

Additional Information
 Jupiter MOID = 2.00805 au 
 T_jup = 3.265 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.261444032360863E-15 -3.629323355946537E-15 -1.400161669139239E-12 1.855469270590214E-14 -3.072447438671023E-13 -6.278087043525357E-16
q -3.629323355946537E-15 1.067830407232614E-14 4.458297729940568E-12 -5.768893788932831E-14 9.852200585175088E-13 2.123891663407324E-15
tp -1.400161669139239E-12 4.458297729940568E-12 2.894870177552198E-8 -8.934597655397742E-11 5.817151399819425E-9 5.26513968681567E-12
node 1.855469270590214E-14 -5.768893788932831E-14 -8.934597655397742E-11 1.144938653428697E-8 -1.145046184501054E-8 -2.79288592920376E-10
peri -3.072447438671023E-13 9.852200585175088E-13 5.817151399819425E-9 -1.145046184501054E-8 1.259688775731988E-8 2.79945465689722E-10
i -6.278087043525357E-16 2.123891663407324E-15 5.26513968681567E-12 -2.79288592920376E-10 2.79945465689722E-10 2.57218530053431E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.13   n/a E2021B10  

48465 (1991 RS20)          Discovered 1991-Sep-14 by Holt, H. E. at Palomar
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 RS20 = 1999 FP26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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