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JPL Small-Body Database Browser
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39992 (1998 HB38)
Classification: Main-belt Asteroid          SPK-ID: 2039992
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2335517009850881 4.3176e-08  
a 2.570209054887946 1.1217e-08 au
q 1.96993235823159 1.1178e-07 au
i 2.484531688477376 5.3287e-06 deg
node 294.0733418409148 0.00010585 deg
peri 334.0396086732718 0.0001065 deg
M 353.7164095161184 1.1522e-05 deg
tp 2458626.769782274303
(2019-May-23.26978227)
4.8175e-05 TDB
period 1505.050598540442
4.12
9.8528e-06
2.698e-08
d
yr
n .2391946160143177 1.5659e-09 deg/d
Q 3.170485751544301 1.3837e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1051  
   data-arc span      15022 days (41.13 yr)  
   first obs. used      1978-09-06  
   last obs. used      2019-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56621  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 05:49:46  

Additional Information
 Earth MOID = .953827 au 
 Jupiter MOID = 1.93746 au 
 T_jup = 3.390 
[ 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 15.2   n/a MPO493128  
diameter diameter 3.318 km 0.238 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.176   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39992 (1998 HB38)          Discovered 1998-Apr-20 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HB38 = 1978 RS10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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