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1000 Piazzia (A923 PF)
Classification: Main-belt Asteroid          SPK-ID: 2001000
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2586546786457018 2.8621e-08  
a 3.170099773777043 1.5448e-08 au
q 2.35013863551593 8.7845e-08 au
i 20.585883367721 4.7659e-06 deg
node 323.7034779683365 9.1831e-06 deg
peri 280.7549701853943 1.3071e-05 deg
M 57.8459682997185 1.0045e-05 deg
tp 2458669.232814355291
(2019-Jul-04.73281436)
5.6734e-05 TDB
period 2061.616225597445
5.64
1.507e-05
4.126e-08
d
yr
n .1746202787551665 1.2764e-09 deg/d
Q 3.990060912038156 1.9444e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3734  
   data-arc span      35510 days (97.22 yr)  
   first obs. used      1923-08-13  
   last obs. used      2020-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36334  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:23:34  

Additional Information
 Earth MOID = 1.43837 au 
 Jupiter MOID = 1.80175 au 
 T_jup = 3.053 
[ 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 10.6   n/a MPO492761  
diameter diameter 47.78 km 2.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
rotation period rot_per 9.47 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2001) Minor Planet Bull. 28, 56.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.1119   0.010 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17

1000 Piazzia (A923 PF)          Discovered 1923-Aug-12 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A923 PF = 1951 OB = 1967 ED 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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