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39814 (1997 XF8)
Classification: Main-belt Asteroid          SPK-ID: 2039814
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1978916226788764 5.5285e-08  
a 2.540854719800479 1.091e-08 au
q 2.038040856307881 1.4283e-07 au
i 7.011153902111942 5.4148e-06 deg
node 297.1572395293371 2.8177e-05 deg
peri 185.3291721697811 2.9954e-05 deg
M 190.1383184284774 1.3518e-05 deg
tp 2459698.509118247949
(2022-Apr-29.00911825)
5.9005e-05 TDB
period 1479.340603745614
4.05
9.5283e-06
2.609e-08
d
yr
n .2433516656600235 1.5674e-09 deg/d
Q 3.043668583293078 1.3069e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1095  
   data-arc span      9746 days (26.68 yr)  
   first obs. used      1994-02-10  
   last obs. used      2020-10-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47255  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 00:19:37  

Additional Information
 Earth MOID = 1.05395 au 
 Jupiter MOID = 2.04613 au 
 T_jup = 3.408 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457219.5 (2015-Jul-16.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1973703180192712 5.4889e-08  
q 2.038442068863458 1.4154e-07 au
tp 2456737.447002936512
(2014-Mar-20.94700294)
4.5703e-05 TDB
node 297.2393461193246 2.825e-05 deg
peri 184.7038045537627 3.004e-05 deg
i 7.001958959670302 5.407e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1095  
   data-arc span      9746 days (26.68 yr)  
   first obs. used      1994-02-10  
   last obs. used      2020-10-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47255  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 00:19:37  

Additional Information
 Jupiter MOID = 2.04613 au 
 T_jup = 3.408 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.012819763415814E-15 -7.75534394329252E-15 -6.006124951729478E-13 -2.474371632495014E-14 -4.50446473237605E-14 1.120674786891348E-15
q -7.75534394329252E-15 2.003426818282442E-14 1.772402762981682E-12 6.381624777743311E-14 1.677050985741221E-13 -2.625503327389406E-15
tp -6.006124951729478E-13 1.772402762981682E-12 2.088747447388147E-9 -1.60813259318651E-13 4.700166473333445E-10 1.40697116043799E-13
node -2.474371632495014E-14 6.381624777743311E-14 -1.60813259318651E-13 7.980771816987346E-10 -7.922433887087329E-10 2.475644016119844E-11
peri -4.50446473237605E-14 1.677050985741221E-13 4.700166473333445E-10 -7.922433887087329E-10 9.023894005219209E-10 -2.451890468177035E-11
i 1.120674786891348E-15 -2.625503327389406E-15 1.40697116043799E-13 2.475644016119844E-11 -2.451890468177035E-11 2.923572643449597E-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 14.6   n/a MPO385070  
diameter diameter 3.313 km 0.150 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.233   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39814 (1997 XF8)          Discovered 1997-Dec-07 by ODAS at Caussols
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 XF8 = 2000 QK23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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