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JPL Small-Body Database Browser
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39994 (1998 HA48)
Classification: Main-belt Asteroid          SPK-ID: 2039994
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1482492623966733 1.0777e-07  
a 2.541201376897233 1.0439e-08 au
q 2.164470147170808 2.789e-07 au
i 5.781026024722732 6.4248e-06 deg
node 164.1270480050927 3.4385e-05 deg
peri 158.0650543679488 4.1077e-05 deg
M 326.1241476019773 1.575e-05 deg
tp 2458739.733833605091
(2019-Sep-13.23383360)
6.4457e-05 TDB
period 1479.643360967015
4.05
9.1169e-06
2.496e-08
d
yr
n .2433018722597609 1.4991e-09 deg/d
Q 2.917932606623658 1.1986e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1140  
   data-arc span      10290 days (28.17 yr)  
   first obs. used      1991-10-04  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54093  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 03:12:27  

Additional Information
 Earth MOID = 1.15258 au 
 Jupiter MOID = 2.40128 au 
 T_jup = 3.423 
[ 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 15.1   n/a MPO347807  
diameter diameter 2.645 km 0.362 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.210   0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39994 (1998 HA48)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HA48 = 1999 RL177 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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