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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09459194333914377 3.4692e-08  
a 2.936995579214362 1.8029e-08 au
q 2.659179459798001 1.0053e-07 au
i 3.096533621207559 4.9841e-06 deg
node 51.90411563918711 0.00010704 deg
peri 22.55991485423005 0.00011291 deg
M 264.9267360303425 3.6758e-05 deg
tp 2459882.022397813739
(2022-Oct-29.52239781)
0.00018906 TDB
period 1838.456532519272
5.03
1.6929e-05
4.635e-08
d
yr
n .1958164327696588 1.8031e-09 deg/d
Q 3.214811698630723 1.9735e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1648  
   data-arc span      10890 days (29.82 yr)  
   first obs. used      1991-09-13  
   last obs. used      2021-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49853  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 14:21:42  

Additional Information
 Earth MOID = 1.67425 au 
 Jupiter MOID = 2.00884 au 
 T_jup = 3.265 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456775.5 (2014-Apr-28.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09944257217494026 3.4929e-08  
q 2.638530431920462 1.0198e-07 au
tp 2456212.464268024742
(2012-Oct-11.96426802)
0.00017014 TDB
node 52.12924426192352 0.00010661 deg
peri 22.21312010470238 0.00011186 deg
i 3.104539668938195 4.9912e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1648  
   data-arc span      10890 days (29.82 yr)  
   first obs. used      1991-09-13  
   last obs. used      2021-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49853  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 14:21:42  

Additional Information
 Jupiter MOID = 2.00884 au 
 T_jup = 3.265 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.220059401256353E-15 -3.52264440385019E-15 -1.378244891672401E-12 1.817104033780248E-14 -3.00868255505327E-13 -6.22914322084506E-16
q -3.52264440385019E-15 1.040089402218004E-14 4.408094444972708E-12 -5.650618810135537E-14 9.702838902617874E-13 2.101019449655605E-15
tp -1.378244891672401E-12 4.408094444972708E-12 2.894876838574099E-8 -9.033485213540521E-11 5.816425093092224E-9 5.327306780279679E-12
node 1.817104033780248E-14 -5.650618810135537E-14 -9.033485213540521E-11 1.136529765064752E-8 -1.136667409795403E-8 -2.727813610695013E-10
peri -3.00868255505327E-13 9.702838902617874E-13 5.816425093092224E-9 -1.136667409795403E-8 1.251261127224829E-8 2.734606595527465E-10
i -6.22914322084506E-16 2.101019449655605E-15 5.327306780279679E-12 -2.727813610695013E-10 2.734606595527465E-10 2.49121928479394E-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 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

Alternate Designations
 1991 RS20 = 1999 FP26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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