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21123 (1992 YP2)
Classification: Main-belt Asteroid          SPK-ID: 2021123
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1220764020333219 4.1481e-08  
a 2.459582747230375 1.065e-08 au
q 2.159325734945257 1.0277e-07 au
i 8.883178387556697 4.5631e-06 deg
node 84.93902591726938 2.3612e-05 deg
peri 358.2628001026724 2.8567e-05 deg
M 100.0044612297076 1.5557e-05 deg
tp 2458809.112043648640
(2019-Nov-21.61204365)
6.0278e-05 TDB
period 1408.933787092224
3.86
9.1509e-06
2.505e-08
d
yr
n .2555123621124685 1.6595e-09 deg/d
Q 2.759839759515493 1.195e-08 au
  Orbit Determination Parameters
   # obs. used (total)      948  
   data-arc span      10280 days (28.15 yr)  
   first obs. used      1992-12-18  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50021  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:40:04  

Additional Information
 Earth MOID = 1.17503 au 
 Jupiter MOID = 2.45039 au 
 T_jup = 3.464 
[ 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 15.08   n/a E2021B10  

21123 (1992 YP2)          Discovered 1992-Dec-18 by Elst, E. W. at Caussols
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1992 YP2 = 1994 JS7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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