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JPL Small-Body Database Browser
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47420 (1999 XB166)
Classification: Main-belt Asteroid          SPK-ID: 2047420
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1039519439735513 3.9546e-08  
a 2.27740351874683 9.5015e-09 au
q 2.040662995760891 9.3559e-08 au
i 8.950769176291859 4.7987e-06 deg
node 351.4750802264507 2.3945e-05 deg
peri 59.25846169257013 3.2643e-05 deg
M 351.2274282204506 2.3021e-05 deg
tp 2459031.090236703395
(2020-Jun-30.59023670)
8.0336e-05 TDB
period 1255.331445551061
3.44
7.856e-06
2.151e-08
d
yr
n .2867768518631894 1.7947e-09 deg/d
Q 2.514144041732769 1.0489e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1054  
   data-arc span      16046 days (43.93 yr)  
   first obs. used      1975-11-27  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53415  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 03:25:24  

Additional Information
 Earth MOID = 1.06534 au 
 Jupiter MOID = 2.795 au 
 T_jup = 3.585 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456794.5 (2014-May-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1045125943938279 3.9696e-08  
q 2.039836650931323 9.407e-08 au
tp 2456518.781118618207
(2013-Aug-14.28111862)
7.6026e-05 TDB
node 351.5734545576018 2.393e-05 deg
peri 58.85130095684528 3.2512e-05 deg
i 8.953935178544116 4.7997e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1054  
   data-arc span      16046 days (43.93 yr)  
   first obs. used      1975-11-27  
   last obs. used      2019-11-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53415  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 03:25:24  

Additional Information
 Jupiter MOID = 2.795 au 
 T_jup = 3.585 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.575745198447017E-15 -3.720855278616764E-15 -8.406368114535918E-13 1.057428862473978E-15 -2.294666192965174E-13 -8.131270532480348E-17
q -3.720855278616764E-15 8.849137971362554E-15 2.000208964548771E-12 -2.746468971504576E-15 5.499850623117696E-13 3.732552363299303E-16
tp -8.406368114535918E-13 2.000208964548771E-12 5.779883631170705E-9 -2.975948997319957E-12 1.683095690106481E-9 -6.163303721904374E-13
node 1.057428862473978E-15 -2.746468971504576E-15 -2.975948997319957E-12 5.726661189178338E-10 -5.658716145987508E-10 2.66935003260635E-12
peri -2.294666192965174E-13 5.499850623117696E-13 1.683095690106481E-9 -5.658716145987508E-10 1.057058150391175E-9 -2.813191194687696E-12
i -8.131270532480348E-17 3.732552363299303E-16 -6.163303721904374E-13 2.66935003260635E-12 -2.813191194687696E-12 2.303757412005182E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO449302  

47420 (1999 XB166)          Discovered 1999-Dec-10 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XB166 = 1975 WG = 1992 UE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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