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21107 (1992 PZ4)
Classification: Main-belt Asteroid          SPK-ID: 2021107
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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1916564970515378 1.9543e-08  
a 2.60742187001349 1.0254e-08 au
q 2.107692528071134 4.9334e-08 au
i 13.45585588765832 1.0122e-06 deg
node 183.223160546816 5.3369e-06 deg
peri 163.4004967079746 8.2033e-06 deg
M 244.1518616556256 1.2251e-05 deg
tp 2459695.382322819568
(2022-Apr-25.88232282)
5.4408e-05 TDB
period 1537.854977742038
4.21
9.0721e-06
2.484e-08
d
yr
n .2340922942737887 1.3809e-09 deg/d
Q 3.107151211955846 1.222e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2015  
   data-arc span      25757 days (70.52 yr)  
   first obs. used      1950-08-22  
   last obs. used      2021-02-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44531  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-17 02:53:29  

Additional Information
 Earth MOID = 1.10349 au 
 Jupiter MOID = 2.35531 au 
 T_jup = 3.347 
[ 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 13.13   n/a E2021B10  
rotation period rot_per 3.289 h n/a LCDB (Rev. 2020-October); 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:
[Clark, M. (2014) Minor Planet Bull. 41, 178-183.]

21107 (1992 PZ4)          Discovered 1992-Aug-04 by Holt, H. E. at Palomar
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1992 PZ4 = 1950 QD = 1999 FJ47 = 2000 GG127 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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