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JPL Small-Body Database Browser
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48882 (1998 HJ139)
Classification: Main-belt Asteroid          SPK-ID: 2048882
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ 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 .1522649708211702 4.9383e-08  
a 2.230291774944776 1.088e-08 au
q 1.890696462910114 1.1093e-07 au
i 6.792624912354517 4.8091e-06 deg
node 125.5427358676549 6.2363e-05 deg
peri 146.900366428699 6.7268e-05 deg
M 58.41699797839445 2.7281e-05 deg
tp 2458403.086119549666
(2018-Oct-11.58611955)
9.203e-05 TDB
period 1216.580779936777
3.33
8.9022e-06
2.437e-08
d
yr
n .2959112998799047 2.1653e-09 deg/d
Q 2.569887086979438 1.2537e-08 au
  Orbit Determination Parameters
   # obs. used (total)      405  
   data-arc span      10486 days (28.71 yr)  
   first obs. used      1991-02-14  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58096  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:39:09  

Additional Information
 Earth MOID = .877986 au 
 Jupiter MOID = 2.5418 au 
 T_jup = 3.618 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.2   n/a MPO436125  
rotation period rot_per 6.96 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

48882 (1998 HJ139)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 HJ139 = 2001 DN25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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