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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 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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1938-Jul-14 14:51 00:03 Jupiter 1.9747395766498 1.97473828341386 1.97474086988799 4.55003645785825 4.45476984040882 2429094.118497576 3.43561712120568 164.382894038666 39.9950405411738 73.6922492362158 1712525.64265089 T 20 CATAB v2.0f-lin.ifort 2020-Jun-24 00:40:26 2020-Jun-24 00:40
1948-Sep-29 18:34 00:03 Jupiter 1.96257532450413 1.96257453953602 1.96257610947492 3.53374013788344 3.40942001416001 2432824.273948087 3.11906174024854 177.917138220155 21.9055422109412 78.115005320441 2037557.39995458 T 20 CATAB v2.0f-lin.ifort 2020-Jun-24 00:40:26 2020-Jun-24 00:40
2020-Apr-24 11:16 < 00:01 Jupiter 1.92187009601946 1.92186943197847 1.92187076006056 3.82837136335697 3.71146476760797 2458963.969459704 0.389680777554003 72.9085967857719 25.5637815349823 79.6521844278245 2107478.50900549 T 20 CATAB v2.0f-lin.ifort 2020-Jun-24 00:40:26 2020-Jun-24 00:40
2091-Nov-15 00:32 00:03 Jupiter 1.90287779749288 1.9028770838775 1.90287851110924 4.06308480198662 3.95201263483916 2485100.522245138 3.45493984243548 172.392256356826 27.3363251423449 83.4409574928602 2106190.4992451 T 20 CATAB v2.0f-lin.ifort 2020-Jun-24 00:40:26 2020-Jun-24 00:40
2163-Jun-06 23:10 00:07 Jupiter 1.9115029879472 1.91150208969486 1.91150388619964 4.23353211095162 4.12753642589921 2511236.465327308 6.64661648823025 158.240480792427 38.5808878783335 -87.9919363546849 1871737.06481777 T 20 CATAB v2.0f-lin.ifort 2020-Jun-24 00:40:26 2020-Jun-24 00:40
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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