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15283 (1991 RB8)
Classification: Main-belt Asteroid          SPK-ID: 2015283
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1222691585311916 2.8073e-08  
a 2.238379135819795 6.2269e-09 au
q 1.964694402409333 6.2507e-08 au
i 5.30257569310277 3.2862e-06 deg
node 37.40862789651406 3.258e-05 deg
peri 58.74963190164173 3.5279e-05 deg
M 129.3284379176631 1.3398e-05 deg
tp 2458561.069262666889
(2019-Mar-18.56926267)
4.5169e-05 TDB
period 1223.204022155086
3.35
5.1042e-06
1.397e-08
d
yr
n .2943090387863004 1.2281e-09 deg/d
Q 2.512063869230257 6.9883e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2251  
   data-arc span      25102 days (68.73 yr)  
   first obs. used      1951-12-01  
   last obs. used      2020-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46762  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:34:38  

Additional Information
 Earth MOID = .987438 au 
 Jupiter MOID = 2.63757 au 
 T_jup = 3.621 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457041.5 (2015-Jan-19.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1219478364715666 2.8082e-08  
q 1.965693998268074 6.2511e-08 au
tp 2457338.507581021638
(2015-Nov-12.00758102)
4.4745e-05 TDB
node 37.42813015157755 3.2591e-05 deg
peri 58.95696720315389 3.53e-05 deg
i 5.301911624989599 3.2851e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2251  
   data-arc span      25102 days (68.73 yr)  
   first obs. used      1951-12-01  
   last obs. used      2020-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46762  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:34:38  

Additional Information
 Jupiter MOID = 2.63757 au 
 T_jup = 3.621 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.885858708656757E-16 -1.74868950642952E-15 -8.446051203430165E-14 -2.217225688361517E-16 -3.814896478915297E-14 -8.305256958337297E-16
q -1.74868950642952E-15 3.907601222065068E-15 2.004438462178711E-13 9.007102716499571E-17 8.699307549485469E-14 1.93723069417927E-15
tp -8.446051203430165E-14 2.004438462178711E-13 2.002115940506207E-9 1.333232933282084E-12 6.133383051920622E-10 -4.020163966123513E-13
node -2.217225688361517E-16 9.007102716499571E-17 1.333232933282084E-12 1.062200404618315E-9 -1.056936055637871E-9 -1.711149766330368E-13
peri -3.814896478915297E-14 8.699307549485469E-14 6.133383051920622E-10 -1.056936055637871E-9 1.246074266253373E-9 5.515221732299445E-14
i -8.305256958337297E-16 1.93723069417927E-15 -4.020163966123513E-13 -1.711149766330368E-13 5.515221732299445E-14 1.079171538847102E-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 14.1   n/a MPO467857  
diameter diameter 3.488 km 0.308 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.438   0.097 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15283 (1991 RB8)          Discovered 1991-Sep-12 by Holt, H. E. at Palomar
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1991 RB8 = 1969 AJ = 1998 XM66 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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