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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07631296917193993 2.9923e-08  
a 2.196500236929206 6.8838e-09 au
q 2.028878782062268 6.5209e-08 au
i 3.628768230363896 4.2029e-06 deg
node 340.1684116552001 5.0171e-05 deg
peri 233.599743873664 5.786e-05 deg
M 340.3029800846471 2.9349e-05 deg
tp 2459265.556895018225
(2021-Feb-20.05689502)
9.6993e-05 TDB
period 1189.036834364253
3.26
5.5896e-06
1.53e-08
d
yr
n .3027660620728228 1.4233e-09 deg/d
Q 2.364121691796143 7.4091e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1697  
   data-arc span      8398 days (22.99 yr)  
   first obs. used      1998-03-25  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50378  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 05:40:19  

Additional Information
 Earth MOID = 1.02405 au 
 Jupiter MOID = 2.60565 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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