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JPL Small-Body Database Browser
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66461 (1999 RQ11)
Classification: Main-belt Asteroid          SPK-ID: 2066461
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1757152999447611 5.6193e-08  
a 2.545617232663817 1.8006e-08 au
q 2.098313337081742 1.4662e-07 au
i 4.423659250781469 5.3675e-06 deg
node 245.4956080148315 6.8557e-05 deg
peri 18.11352194466578 6.9798e-05 deg
M 90.17355583085568 1.6099e-05 deg
tp 2458628.909352170270
(2019-May-25.40935217)
6.4813e-05 TDB
period 1483.501809218088
4.06
1.574e-05
4.309e-08
d
yr
n .2426690670432994 2.5748e-09 deg/d
Q 2.992921128245893 2.117e-08 au
  Orbit Determination Parameters
   # obs. used (total)      577  
   data-arc span      8648 days (23.68 yr)  
   first obs. used      1994-07-05  
   last obs. used      2018-03-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56157  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 01:56:47  

Additional Information
 Earth MOID = 1.08323 au 
 Jupiter MOID = 2.08356 au 
 T_jup = 3.417 
[ 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 15.3   n/a MPO436245  
diameter diameter 2.472 km 0.438 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.200   0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66461 (1999 RQ11)          Discovered 1999-Sep-07 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ 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
1958-Dec-22 23:01 00:04 Thisb 0.023018191721445 0.0230075253938889 0.0230288589623051 2.28595225705019 2.28595212747066 2436560.458757944 4.42847594909368 578.034473939013 43.1394063760104 23.3711568078658 32076.3968020548 T 17 CATAB v2.0e-lin.ifort 2018-Oct-04 01:56:51 2018-Dec-17 17:03
2109-Jun-04 20:35 00:02 Iris 0.043094925026168 0.043076012858021 0.043113839768101 7.57087284757343 7.57087282995363 2491511.357921495 1.86420714127851 1079.60505657091 41.0816650698507 29.1577425611114 76622.0272168536 T 17 CATAB v2.0e-lin.ifort 2018-Oct-04 01:56:51 2018-Dec-17 17:03

Alternate Designations
 1999 RQ11 = 2002 EK146 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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