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39668 (1995 YR5)
Classification: Main-belt Asteroid          SPK-ID: 2039668
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07218285560565617 4.2044e-08  
a 2.762898519417635 1.8344e-08 au
q 2.56346461453743 1.1572e-07 au
i 6.393622128500788 4.4542e-06 deg
node 80.14845817031231 4.0473e-05 deg
peri 263.2335259508899 5.2024e-05 deg
M 188.2644459717347 3.4304e-05 deg
tp 2459800.709203604432
(2022-Aug-09.20920360)
0.00016145 TDB
period 1677.435490441208
4.59
1.6706e-05
4.574e-08
d
yr
n .2146133201851542 2.1373e-09 deg/d
Q 2.962332424297839 1.9668e-08 au
  Orbit Determination Parameters
   # obs. used (total)      636  
   data-arc span      9868 days (27.02 yr)  
   first obs. used      1993-04-22  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55986  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:45:04  

Additional Information
 Earth MOID = 1.5652 au 
 Jupiter MOID = 2.32278 au 
 T_jup = 3.328 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457204.5 (2015-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07034610210747635 4.1792e-08  
q 2.571433627366605 1.1467e-07 au
tp 2456439.114746814693
(2013-May-26.61474681)
0.00016211 TDB
node 80.25564195267471 4.0463e-05 deg
peri 262.2032705721912 5.265e-05 deg
i 6.392397311528064 4.4522e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      636  
   data-arc span      9868 days (27.02 yr)  
   first obs. used      1993-04-22  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55986  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:45:04  

Additional Information
 Jupiter MOID = 2.32278 au 
 T_jup = 3.328 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.746574474664761E-15 -4.739431537764704E-15 1.496948412863727E-12 -4.22652523831397E-15 2.844691521181786E-13 1.284355482492828E-15
q -4.739431537764704E-15 1.315033628390741E-14 -4.042868148885595E-12 1.26470427147479E-14 -7.426857067335974E-13 -3.462252583284909E-15
tp 1.496948412863727E-12 -4.042868148885595E-12 2.627813996101041E-8 9.399654497470486E-13 5.480882240691876E-9 -2.61396841225822E-13
node -4.22652523831397E-15 1.26470427147479E-14 9.399654497470486E-13 1.63722720553571E-9 -1.626245632143858E-9 -2.038384099967848E-11
peri 2.844691521181786E-13 -7.426857067335974E-13 5.480882240691876E-9 -1.626245632143858E-9 2.771991938453413E-9 2.01795818274856E-11
i 1.284355482492828E-15 -3.462252583284909E-15 -2.61396841225822E-13 -2.038384099967848E-11 2.01795818274856E-11 1.982244176501046E-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 15.4   n/a MPO417091  

39668 (1995 YR5)          Discovered 1995-Dec-16 by Spacewatch at Kitt Peak
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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