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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1944463804932117 5.9371e-08  
a 2.383404055222582 1.4502e-08 au
q 1.919959763431708 1.4613e-07 au
i 6.549202299541101 5.2786e-06 deg
node 35.20712890377444 5.2289e-05 deg
peri 188.3375361099961 5.5806e-05 deg
M 243.2378365144311 2.5438e-05 deg
tp 2459036.407729959608
(2020-Jul-05.90772996)
9.7894e-05 TDB
period 1343.986597206674
3.68
1.2266e-05
3.358e-08
d
yr
n .2678598140399762 2.4447e-09 deg/d
Q 2.846848347013456 1.7322e-08 au
  Orbit Determination Parameters
   # obs. used (total)      398  
   data-arc span      7628 days (20.88 yr)  
   first obs. used      1998-03-22  
   last obs. used      2019-02-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58364  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:19:19  

Additional Information
 Earth MOID = .911708 au 
 Jupiter MOID = 2.13408 au 
 T_jup = 3.502 
[ 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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