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28395 (1999 RZ42)
Classification: Main-belt Asteroid          SPK-ID: 2028395
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2171351687220034 1.1689e-07  
a 2.576790931987574 3.4834e-08 au
q 2.017278998209123 2.9105e-07 au
i 16.41383587605092 8.5065e-06 deg
node 52.17223886745853 2.8647e-05 deg
peri 318.0221489893972 3.6464e-05 deg
M 9.904864539823652 3.4636e-05 deg
tp 2457558.931606385931
(2016-Jun-19.43160639)
0.00014498 JED
period 1510.83557386353
4.14
3.0636e-05
8.388e-08
d
yr
n .2382787420601985 4.8317e-09 deg/d
Q 3.136302865766024 4.2397e-08 au
  Orbit Determination Parameters
   # obs. used (total)      580  
   data-arc span      7735 days (21.18 yr)  
   first obs. used      1994-05-04  
   last obs. used      2015-07-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54409  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 15:12:53  

Additional Information
 Earth MOID = 1.04653 au 
 Jupiter MOID = 2.38425 au 
 T_jup = 3.337 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9 mag n/a MPO263588  
rotation period rot_per 5.2373 h n/a LCDB (Rev. 2016-February); 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. (2016) Astron. J. 150, A75.]

28395 (1999 RZ42)          Discovered 1999-Sep-03 by McNaught, R. H. at Siding Spring
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 RZ42 = 1998 HW95 = 1999 XD 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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