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21107 (1992 PZ4)
Classification: Main-belt Asteroid          SPK-ID: 2021107
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1900516714619239 6.6501e-08  
a 2.611297442672084 2.0162e-08 au
q 2.115015999008007 1.8053e-07 au
i 13.44478640319109 7.3657e-06 deg
node 183.2430798192416 2.1276e-05 deg
peri 163.0063766003768 2.6387e-05 deg
M 183.536688666184 1.6864e-05 deg
tp 2458156.000690741274
(2018-Feb-06.50069074)
7.6192e-05 JED
period 1541.284965192299
4.22
1.7851e-05
4.887e-08
d
yr
n .2335713434764378 2.7051e-09 deg/d
Q 3.107578886336161 2.3994e-08 au
  Orbit Determination Parameters
   # obs. used (total)      966  
   data-arc span      23859 days (65.32 yr)  
   first obs. used      1950-08-22  
   last obs. used      2015-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47369  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:47:05  

Additional Information
 Earth MOID = 1.11067 au 
 Jupiter MOID = 2.34444 au 
 T_jup = 3.346 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0 mag n/a MPO267786  
rotation period rot_per 3.289 h n/a LCDB (Rev. 2015-December); 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 Bul. 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 | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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