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120981 (1998 XZ5)
Classification: Main-belt Asteroid          SPK-ID: 2120981
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .185593082314974 3.1827e-08  
a 2.334903173687676 9.8234e-09 au
q 1.901561296775965 7.4758e-08 au
i 2.184818290444479 4.9213e-06 deg
node 194.1471076468402 0.00010294 deg
peri 115.3362846254481 0.0001046 deg
M 155.6940374275267 1.5069e-05 deg
tp 2458636.899694109460
(2019-Jun-02.39969411)
5.4531e-05 TDB
period 1303.171999859273
3.57
8.2241e-06
2.252e-08
d
yr
n .276249029321437 1.7434e-09 deg/d
Q 2.768245050599386 1.1647e-08 au
  Orbit Determination Parameters
   # obs. used (total)      335  
   data-arc span      8088 days (22.14 yr)  
   first obs. used      1998-11-27  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64447  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:37:28  

Additional Information
 Earth MOID = .886323 au 
 Jupiter MOID = 2.49161 au 
 T_jup = 3.544 
[ 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 17.1   n/a MPO493691  

120981 (1998 XZ5)          Discovered 1998-Dec-08 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 XZ5 = 2005 TR26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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