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49048 (1998 RZ21)
Classification: Main-belt Asteroid          SPK-ID: 2049048
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1218914485389724 4.8628e-08  
a 2.333987339308335 9.1194e-09 au
q 2.04949424164842 1.1131e-07 au
i 5.337962908887415 5.534e-06 deg
node 356.9294541889744 4.0345e-05 deg
peri 146.7655038702251 4.38e-05 deg
M 252.708228273226 1.8272e-05 deg
tp 2459388.659381222361
(2021-Jun-23.15938122)
6.7095e-05 TDB
period 1302.405347503265
3.57
7.6332e-06
2.09e-08
d
yr
n .2764116414986522 1.62e-09 deg/d
Q 2.61848043696825 1.0231e-08 au
  Orbit Determination Parameters
   # obs. used (total)      855  
   data-arc span      7752 days (21.22 yr)  
   first obs. used      1998-09-15  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54725  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:16:53  

Additional Information
 Earth MOID = 1.06381 au 
 Jupiter MOID = 2.38585 au 
 T_jup = 3.553 
[ 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 15.3   n/a MPO280005  
diameter diameter 2.569 km 0.582 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.223   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

49048 (1998 RZ21)          Discovered 1998-Sep-15 by Spacewatch at Kitt Peak
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 RZ21 = 2000 CJ85 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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