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136900 (1998 HL49)
Classification: Apollo [NEO]          SPK-ID: 2136900
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 84 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6363890974166526 5.148e-08  
a 1.747080481878996 4.857e-08 au
q .6352575109017714 9.439e-08 au
i 10.98017744702495 8.0216e-06 deg
node 205.9843667816378 2.0009e-05 deg
peri 239.2480552160958 2.1113e-05 deg
M 285.342275384311 3.966e-05 deg
tp 2459175.420231509517
(2020-Nov-21.92023151)
0.00010018 TDB
period 843.4664151309123
2.31
3.5173e-05
9.63e-08
d
yr
n .4268101177971921 1.7798e-08 deg/d
Q 2.858903452856222 7.9479e-08 au
  Orbit Determination Parameters
   # obs. used (total)      312  
   data-arc span      7735 days (21.18 yr)  
   first obs. used      1998-04-30  
   last obs. used      2019-07-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48036  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-07 05:39:18  

Additional Information
 Earth MOID = .0836046 au 
 Jupiter MOID = 2.48791 au 
 T_jup = 3.856 
[ 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 17.1   n/a MPO475190  

136900 (1998 HL49)          Discovered 1998-Apr-30 by Spacewatch at Kitt Peak
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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