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136899 (1998 HH44)
Classification: Main-belt Asteroid          SPK-ID: 2136899
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1943618624854929 5.5717e-08  
a 2.382849299800018 8.4088e-09 au
q 1.919714271868634 1.3421e-07 au
i 6.549238693367309 4.8366e-06 deg
node 35.19866105846206 4.0946e-05 deg
peri 188.4189605349092 4.2893e-05 deg
M 350.3249714060855 1.299e-05 deg
tp 2459036.607136564701
(2020-Jul-06.10713656)
4.8506e-05 TDB
period 1343.517389857468
3.68
7.1117e-06
1.947e-08
d
yr
n .2679533608702988 1.4184e-09 deg/d
Q 2.845984327731403 1.0043e-08 au
  Orbit Determination Parameters
   # obs. used (total)      560  
   data-arc span      8104 days (22.19 yr)  
   first obs. used      1998-03-22  
   last obs. used      2020-05-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52797  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 02:32:01  

Additional Information
 Earth MOID = .911355 au 
 Jupiter MOID = 2.13441 au 
 T_jup = 3.503 
[ 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 16.2   n/a MPO417724  

136899 (1998 HH44)          Discovered 1998-Apr-20 by LINEAR at Socorro
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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