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160031 (1998 HD48)
Classification: Main-belt Asteroid          SPK-ID: 2160031
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1555252257883518 3.4334e-08  
a 2.605900522130705 1.6496e-08 au
q 2.200617255044343 8.3802e-08 au
i 4.607453069939337 4.4651e-06 deg
node 126.35648332 7.7225e-05 deg
peri 146.079474929043 8.0709e-05 deg
M 85.35938950200595 2.3572e-05 deg
tp 2458836.179192584640
(2019-Dec-18.67919258)
0.00010092 TDB
period 1536.50923975326
4.21
1.4589e-05
3.994e-08
d
yr
n .2342973219333263 2.2247e-09 deg/d
Q 3.011183789217066 1.9061e-08 au
  Orbit Determination Parameters
   # obs. used (total)      492  
   data-arc span      8323 days (22.79 yr)  
   first obs. used      1998-03-25  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57579  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 19:59:37  

Additional Information
 Earth MOID = 1.18431 au 
 Jupiter MOID = 2.09999 au 
 T_jup = 3.390 
[ 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 15.95   n/a E2021B55  

160031 (1998 HD48)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20070730/Numbers.arcLast Updated: 2007-08-06

[ show close-approach data ]
Alternate Designations
 1998 HD48 = 2002 EG29 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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