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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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456937.5 (2014-Oct-07.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1211109896324663 4.862e-08  
q 2.051543054438033 1.112e-07 au
tp 2456782.289912722900
(2014-May-04.78991272)
6.2367e-05 TDB
node 357.0098472793022 4.032e-05 deg
peri 146.5198045634201 4.384e-05 deg
i 5.339754498708046 5.5345e-06 deg
  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
 Jupiter MOID = 2.38585 au 
 T_jup = 3.553 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.363901724071245E-15 -5.393764893624542E-15 1.036166389480389E-12 2.683790193222048E-15 2.87599109291406E-13 -1.100463810856566E-15
q -5.393764893624542E-15 1.236587172433373E-14 -2.296857573119573E-12 -6.474152874059234E-15 -6.380364707821299E-13 2.569776779277249E-15
tp 1.036166389480389E-12 -2.296857573119573E-12 3.88959963358612E-9 -3.019099191536613E-12 1.083669792779159E-9 9.434298964616486E-13
node 2.683790193222048E-15 -6.474152874059234E-15 -3.019099191536613E-12 1.625728050821625E-9 -1.618757708837364E-9 -4.002992779392445E-11
peri 2.87599109291406E-13 -6.380364707821299E-13 1.083669792779159E-9 -1.618757708837364E-9 1.921976165494921E-9 4.011032436664236E-11
i -1.100463810856566E-15 2.569776779277249E-15 9.434298964616486E-13 -4.002992779392445E-11 4.011032436664236E-11 3.063030300589514E-11

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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