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91550 (1999 RW210)
Classification: Main-belt Asteroid          SPK-ID: 2091550
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1008969873618176 4.59e-08  
a 3.121192101847575 3.402e-08 au
q 2.806273221793655 1.5405e-07 au
i 9.900768832652831 7.4613e-06 deg
node 315.3066536913039 3.0306e-05 deg
peri 97.91784409849478 5.3374e-05 deg
M 247.419446656184 4.4612e-05 deg
tp 2459630.354235182070
(2022-Feb-19.85423518)
0.00025443 TDB
period 2014.091403273428
5.51
3.2929e-05
9.015e-08
d
yr
n .1787406467327677 2.9223e-09 deg/d
Q 3.436110981901495 3.7452e-08 au
  Orbit Determination Parameters
   # obs. used (total)      659  
   data-arc span      8831 days (24.18 yr)  
   first obs. used      1996-03-27  
   last obs. used      2020-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53995  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:40:20  

Additional Information
 Earth MOID = 1.83981 au 
 Jupiter MOID = 1.90663 au 
 T_jup = 3.185 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456788.5 (2014-May-11.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1057022148269439 4.6508e-08  
q 2.78465666455774 1.566e-07 au
tp 2457616.272971590674
(2016-Aug-15.77297159)
0.00022423 TDB
node 315.5672777355819 3.045e-05 deg
peri 97.14134847949914 5.1206e-05 deg
i 9.881439014384835 7.4518e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      659  
   data-arc span      8831 days (24.18 yr)  
   first obs. used      1996-03-27  
   last obs. used      2020-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53995  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 00:40:20  

Additional Information
 Jupiter MOID = 1.90663 au 
 T_jup = 3.185 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.163025335915492E-15 -7.163623350296633E-15 -3.256382163716766E-12 4.217912640936069E-16 -5.305005263956437E-13 -2.827138070584893E-15
q -7.163623350296633E-15 2.452214605223389E-14 1.281517363730342E-11 -4.618711690177874E-15 2.06995105768843E-12 1.146008463971777E-14
tp -3.256382163716766E-12 1.281517363730342E-11 5.027774888262038E-8 -2.341023985230388E-11 9.238792558615487E-9 1.686998300873397E-11
node 4.217912640936069E-16 -4.618711690177874E-15 -2.341023985230388E-11 9.272203302139984E-10 -9.173365883114952E-10 7.518128596163049E-11
peri -5.305005263956437E-13 2.06995105768843E-12 9.238792558615487E-9 -9.173365883114952E-10 2.622086301383675E-9 -7.11747287799903E-11
i -2.827138070584893E-15 1.146008463971777E-14 1.686998300873397E-11 7.518128596163049E-11 -7.11747287799903E-11 5.552930050696054E-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 14.3   n/a MPO436411  
diameter diameter 7.701 km 0.108 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.082   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91550 (1999 RW210)          Discovered 1999-Sep-08 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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