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91560 (1999 RW226)
Classification: Main-belt Asteroid          SPK-ID: 2091560
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1812061039615066 4.5909e-08  
a 2.978318675058749 1.7155e-08 au
q 2.438629151595557 1.4159e-07 au
i 11.84374787250113 4.1252e-06 deg
node 299.1853055866076 2.1369e-05 deg
peri 114.4394354872453 2.7365e-05 deg
M 39.9551238901845 1.2613e-05 deg
tp 2459188.134815580368
(2020-Dec-04.63481558)
6.6555e-05 TDB
period 1877.392912038874
5.14
1.6221e-05
4.441e-08
d
yr
n .191755278126109 1.6568e-09 deg/d
Q 3.518008198521942 2.0264e-08 au
  Orbit Determination Parameters
   # obs. used (total)      879  
   data-arc span      9235 days (25.28 yr)  
   first obs. used      1995-12-19  
   last obs. used      2021-04-01  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39314  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:40:52  

Additional Information
 Earth MOID = 1.47853 au 
 Jupiter MOID = 1.92528 au 
 T_jup = 3.203 
[ show covariance matrix ]

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 15.01   n/a MPCxxxxx  

91560 (1999 RW226)          Discovered 1999-Sep-05 by CSS at Catalina
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ hide close-approach data ]
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
1900-Aug-20 19:03 00:03 Jupiter 1.98147677868073 1.98147584803214 1.98147770933664 3.0698291635207 2.92727013696067 2415252.293429903 2.9693974006221 235.926286887497 20.3967368391016 75.4039440407065 2548535.68124408 T 20 CATAB v2.0g-lin.ifort 2021-Jul-08 23:40:55 2021-Jul-08 23:40
1936-Nov-30 14:16 00:02 Jupiter 1.94629622420852 1.94629568851091 1.94629675990733 3.82637707981805 3.71089845149097 2428503.094739792 1.8842441091588 182.607566049548 20.0958224404732 84.6153812993869 3065764.35614943 T 20 CATAB v2.0g-lin.ifort 2021-Jul-08 23:40:55 2021-Jul-08 23:40
1973-Mar-03 03:52 < 00:01 Jupiter 1.99226759546288 1.99226708428206 1.99226810664382 4.40298910878725 4.30534587583736 2441744.661224402 0.995590797595259 118.712710197656 22.1144076580575 86.2701169356303 3341228.39454507 T 20 CATAB v2.0g-lin.ifort 2021-Jul-08 23:40:55 2021-Jul-08 23:40
2090-Dec-01 15:31 00:02 Jupiter 1.92528789460901 1.92528740652747 1.92528838269054 3.65020384030588 3.52761906678972 2484752.146742434 1.94725747602923 186.225658181057 20.4654921865582 87.558463464395 3063028.07540704 T 20 CATAB v2.0g-lin.ifort 2021-Jul-08 23:40:55 2021-Jul-08 23:40
2127-Mar-04 05:23 00:03 Jupiter 1.94569218422969 1.94569120644692 1.94569316201412 4.19223314816427 4.08707160630545 2497992.724061501 2.78804527507398 169.328319524338 35.9315800604514 -82.2408034355004 2393333.90979148 T 20 CATAB v2.0g-lin.ifort 2021-Jul-08 23:40:55 2021-Jul-08 23:40

Alternate Designations
 1999 RW226 = 1995 YG13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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