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JPL Small-Body Database Browser
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136916 (1998 HW115)
Classification: Main-belt Asteroid          SPK-ID: 2136916
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1068597149070041 5.206e-08  
a 3.05358671001986 2.4114e-08 au
q 2.727281304743322 1.5949e-07 au
i 10.14237065769063 5.7155e-06 deg
node 153.2375587822942 3.165e-05 deg
peri 12.44629176808406 4.1998e-05 deg
M 17.46858248255806 2.5989e-05 deg
tp 2458505.926605762031
(2019-Jan-22.42660576)
0.00014066 TDB
period 1949.008854019113
5.34
2.3086e-05
6.321e-08
d
yr
n .1847092686406388 2.1879e-09 deg/d
Q 3.379892115296399 2.669e-08 au
  Orbit Determination Parameters
   # obs. used (total)      489  
   data-arc span      7680 days (21.03 yr)  
   first obs. used      1998-04-21  
   last obs. used      2019-05-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5871  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:02:49  

Additional Information
 Earth MOID = 1.73652 au 
 Jupiter MOID = 1.60009 au 
 T_jup = 3.204 
[ 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 14.9   n/a MPO436675  

136916 (1998 HW115)          Discovered 1998-Apr-23 by LINEAR at Socorro
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

[ show close-approach data ]
Alternate Designations
 1998 HW115 = 2003 EK27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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