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136874 (1998 FH74)
Classification: Apollo [NEO]          SPK-ID: 2136874
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 172 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .883923724732679 2.7077e-08  
a 2.202966527510479 7.408e-09 au
q .2557121490520007 6.0091e-08 au
i 21.13953873884155 8.5442e-06 deg
node 197.5362037683419 1.3505e-05 deg
peri 193.3888856072644 1.3173e-05 deg
M 332.3605828361642 8.7493e-06 deg
tp 2459092.193099724338
(2020-Aug-30.69309972)
2.9411e-05 TDB
period 1194.291316097364
3.27
6.0241e-06
1.649e-08
d
yr
n .3014339928187599 1.5205e-09 deg/d
Q 4.150220905968958 1.3956e-08 au
  Orbit Determination Parameters
   # obs. used (total)      920  
   data-arc span      9194 days (25.17 yr)  
   first obs. used      1995-05-04  
   last obs. used      2020-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49921  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jul-06 06:02:13  

Additional Information
 Earth MOID = .235875 au 
 Jupiter MOID = 1.33187 au 
 T_jup = 2.930 
[ 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 15.6   n/a MPO439844  
diameter diameter 3.398 km 0.129 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
geometric albedo albedo 0.073   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

136874 (1998 FH74)          Discovered 1998-Mar-31 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1998 FH74 = 2001 FM31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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