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48617 (1995 HR2)
Classification: Main-belt Asteroid          SPK-ID: 2048617
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1336860227646399 4.3551e-08  
a 2.991571885459275 2.0817e-08 au
q 2.591640538277709 1.3337e-07 au
i 11.46164254876937 5.446e-06 deg
node 53.62590855145701 2.8286e-05 deg
peri 60.4259724229497 3.8426e-05 deg
M 315.9019671610277 2.5392e-05 deg
tp 2458832.007096021665
(2019-Dec-14.50709602)
0.00013418 TDB
period 1889.938149217035
5.17
1.9727e-05
5.401e-08
d
yr
n .1904824240672326 1.9882e-09 deg/d
Q 3.39150323264084 2.36e-08 au
  Orbit Determination Parameters
   # obs. used (total)      768  
   data-arc span      8951 days (24.51 yr)  
   first obs. used      1995-04-25  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57015  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 06:37:50  

Additional Information
 Earth MOID = 1.631 au 
 Jupiter MOID = 1.86823 au 
 T_jup = 3.212 
[ 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 14.2   n/a MPO417153  
diameter diameter 4.719 km 0.297 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.058 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.218   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

48617 (1995 HR2)          Discovered 1995-Apr-25 by Spacewatch at Kitt Peak
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1995 HR2 = 1998 XK40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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