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JPL Small-Body Database Browser
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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 ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1008969929521037 4.6469e-08  
a 3.121192105783709 3.4532e-08 au
q 2.806273207884288 1.5502e-07 au
i 9.900770912074647 7.6416e-06 deg
node 315.3066638064293 3.1423e-05 deg
peri 97.91782766700463 5.4865e-05 deg
M 247.4194516667709 4.5172e-05 deg
tp 2459630.354208340811
(2022-Feb-19.85420834)
0.00025723 TDB
period 2014.091407083382
5.51
3.3425e-05
9.151e-08
d
yr
n .178740646394653 2.9663e-09 deg/d
Q 3.436111003683129 3.8016e-08 au
  Orbit Determination Parameters
   # obs. used (total)      655  
   data-arc span      8466 days (23.18 yr)  
   first obs. used      1996-03-27  
   last obs. used      2019-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54074  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 14:03:32  

Additional Information
 Earth MOID = 1.83981 au 
 Jupiter MOID = 1.90663 au 
 T_jup = 3.185 
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Orbital Elements at Epoch 2456698.5 (2014-Feb-10.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .105805117204564 4.7094e-08  
q 2.784088459346649 1.5765e-07 au
tp 2457616.156509538491
(2016-Aug-15.65650954)
0.00022732 TDB
node 315.568852965126 3.1572e-05 deg
peri 97.14347782853891 5.2599e-05 deg
i 9.881308885909599 7.6321e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      655  
   data-arc span      8466 days (23.18 yr)  
   first obs. used      1996-03-27  
   last obs. used      2019-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54074  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 14:03:32  

Additional Information
 Jupiter MOID = 1.90663 au 
 T_jup = 3.185 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.217876619887075E-15 -7.29871611127225E-15 -3.54292130118574E-12 8.86696260957718E-16 -5.93425332494105E-13 -2.736215510145574E-15
q -7.29871611127225E-15 2.485364012885188E-14 1.352508081755431E-11 -6.593492734866063E-15 2.226908288762975E-12 1.104243662392651E-14
tp -3.54292130118574E-12 1.352508081755431E-11 5.167437840437128E-8 -4.732651535384765E-11 9.570921131836519E-9 1.214577898811599E-11
node 8.86696260957718E-16 -6.593492734866063E-15 -4.732651535384765E-11 9.968077369431647E-10 -9.904770749415948E-10 8.896925226028878E-11
peri -5.93425332494105E-13 2.226908288762975E-12 9.570921131836519E-9 -9.904770749415948E-10 2.766604050362923E-9 -8.566057508427296E-11
i -2.736215510145574E-15 1.104243662392651E-14 1.214577898811599E-11 8.896925226028878E-11 -8.566057508427296E-11 5.824935139049775E-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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