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JPL Small-Body Database Browser
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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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07667092090963375 3.0528e-08  
a 2.196495354180051 7.0598e-09 au
q 2.028088032601334 6.6378e-08 au
i 3.628598414150484 4.3555e-06 deg
node 340.1805918976954 5.0353e-05 deg
peri 233.4927159829727 5.8424e-05 deg
M 158.7840301606059 2.9904e-05 deg
tp 2458076.057136040415
(2017-Nov-18.55713604)
9.8466e-05 TDB
period 1189.03286958068
3.26
5.7325e-06
1.569e-08
d
yr
n .3027670716344086 1.4597e-09 deg/d
Q 2.364902675758767 7.601e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1583  
   data-arc span      7924 days (21.69 yr)  
   first obs. used      1998-03-25  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50989  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 03:57:52  

Additional Information
 Earth MOID = 1.02447 au 
 Jupiter MOID = 2.60699 au 
 T_jup = 3.662 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456603.5 (2013-Nov-07.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0764623296465855 3.0554e-08  
q 2.029074357351191 6.641e-08 au
tp 2456886.931458805406
(2014-Aug-17.43145881)
9.8352e-05 TDB
node 340.2254075267613 5.0332e-05 deg
peri 233.4400264170511 5.8437e-05 deg
i 3.629498792415377 4.3556e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1583  
   data-arc span      7924 days (21.69 yr)  
   first obs. used      1998-03-25  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50989  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 03:57:52  

Additional Information
 Jupiter MOID = 2.60699 au 
 T_jup = 3.662 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.335624494452849E-16 -2.019411380678332E-15 -8.909113871694901E-13 2.357878924187918E-15 -2.670910026566726E-13 3.135033407111425E-16
q -2.019411380678332E-15 4.410234758133231E-15 1.990001492303056E-12 -5.552787132632401E-15 5.933428490849677E-13 -7.622166688874211E-16
tp -8.909113871694901E-13 1.990001492303056E-12 9.673118196786418E-9 -1.836578578059175E-11 2.927280637774787E-9 -6.158539992831281E-13
node 2.357878924187918E-15 -5.552787132632401E-15 -1.836578578059175E-11 2.533272077612716E-9 -2.533044496129312E-9 -2.597225514118391E-11
peri -2.670910026566726E-13 5.933428490849677E-13 2.927280637774787E-9 -2.533044496129312E-9 3.414937417723521E-9 2.574952836057568E-11
i 3.135033407111425E-16 -7.622166688874211E-16 -6.158539992831281E-13 -2.597225514118391E-11 2.574952836057568E-11 1.897168193144599E-11

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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