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136905 (1998 HF78)
Classification: Main-belt Asteroid          SPK-ID: 2136905
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1315539054852994 4.9925e-08  
a 3.177275450053521 3.3734e-08 au
q 2.759292455796417 1.5069e-07 au
i 21.08189024545866 7.3134e-06 deg
node 218.4031261525458 1.3322e-05 deg
peri 233.6344364370994 3.2365e-05 deg
M 71.6044589322649 2.6226e-05 deg
tp 2458589.048837071463
(2019-Apr-15.54883707)
0.00015202 TDB
period 2068.620039352456
5.66
3.2945e-05
9.02e-08
d
yr
n .1740290595428494 2.7716e-09 deg/d
Q 3.595258444310624 3.8172e-08 au
  Orbit Determination Parameters
   # obs. used (total)      547  
   data-arc span      8041 days (22.02 yr)  
   first obs. used      1998-04-21  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53482  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 22:41:50  

Additional Information
 Earth MOID = 1.82347 au 
 Jupiter MOID = 1.93179 au 
 T_jup = 3.083 
[ 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 14.5   n/a MPO436675  
diameter diameter 6.583 km 0.288 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

136905 (1998 HF78)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1947-Sep-04 19:53 00:03 Jupiter 1.96571849453682 1.96571771868531 1.96571927039838 5.76030499758382 5.68500829779959 2432433.328656663 3.04196254701842 413.543581282375 31.6527846507349 -86.9273501242645 2656765.88515637 T 19 CATAB v2.0f-lin.ifort 2020-May-20 22:41:53 2020-May-20 22:42
2089-Sep-23 19:43 00:03 Jupiter 1.99390774761034 1.99390665210568 1.99390884315251 5.93428977705488 5.86226787355693 2484318.321654230 3.45774768941223 531.274522334964 30.1425276839632 85.3644929549481 2699291.68670413 T 19 CATAB v2.0f-lin.ifort 2020-May-20 22:41:53 2020-May-20 22:42
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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