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46788 (1998 HP139)
Classification: Main-belt Asteroid          SPK-ID: 2046788
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07667091973686184 3.103e-08  
a 2.19649535389107 7.1694e-09 au
q 2.028088034910498 6.7294e-08 au
i 3.628597610056703 4.4728e-06 deg
node 340.1805929706412 5.0374e-05 deg
peri 233.492716312166 5.8753e-05 deg
M 158.7840289538136 3.0349e-05 deg
tp 2458076.057140129790
(2017-Nov-18.55714013)
0.00010002 TDB
period 1189.032869346027
3.26
5.8215e-06
1.594e-08
d
yr
n .3027670716941588 1.4824e-09 deg/d
Q 2.364902672871642 7.7191e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1534  
   data-arc span      7890 days (21.60 yr)  
   first obs. used      1998-03-25  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51425  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:29:02  

Additional Information
 Earth MOID = 1.02447 au 
 Jupiter MOID = 2.60699 au 
 T_jup = 3.662 
[ 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 14.8   n/a MPO347848  
diameter diameter 2.336 km 0.541 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.468   0.236 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46788 (1998 HP139)          Discovered 1998-Apr-21 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 HP139 = 1985 DG2 = 1999 UB17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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