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48618 (1995 HB4)
Classification: Main-belt Asteroid          SPK-ID: 2048618
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2267958566364751 4.0234e-08  
a 2.742998177998847 1.6174e-08 au
q 2.120897556467308 1.0607e-07 au
i 3.889739521412653 4.3962e-06 deg
node 134.5835677705082 6.4611e-05 deg
peri 310.3139951406108 6.5467e-05 deg
M 213.6824985618063 1.0852e-05 deg
tp 2459274.920062624339
(2021-Mar-01.42006262)
5.274e-05 TDB
period 1659.345055501239
4.54
1.4677e-05
4.018e-08
d
yr
n .2169530676012739 1.9189e-09 deg/d
Q 3.365098799530386 1.9842e-08 au
  Orbit Determination Parameters
   # obs. used (total)      972  
   data-arc span      8478 days (23.21 yr)  
   first obs. used      1995-04-26  
   last obs. used      2018-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56003  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 00:30:07  

Additional Information
 Earth MOID = 1.13953 au 
 Jupiter MOID = 1.88108 au 
 T_jup = 3.308 
[ 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 14.8   n/a MPO449311  
diameter diameter 4.952 km 0.436 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.104   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48618 (1995 HB4)          Discovered 1995-Apr-26 by Spacewatch at Kitt Peak
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1995 HB4 = 1999 FU49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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