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1123 Shapleya (1928 ST)
Classification: Main-belt Asteroid          SPK-ID: 2001123
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1564776840221165 3.9745e-08  
a 2.225753829817419 6.0055e-09 au
q 1.877473025324233 8.8176e-08 au
i 6.419412905975844 3.5755e-06 deg
node 79.90707161608594 4.3205e-05 deg
peri 317.5411525639603 4.4885e-05 deg
M 148.3594614182153 1.3997e-05 deg
tp 2457100.664764455764
(2015-Mar-19.16476446)
4.6277e-05 JED
period 1212.869628103355
3.32
4.9089e-06
1.344e-08
d
yr
n .2968167325312251 1.2013e-09 deg/d
Q 2.574034634310605 6.9453e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1613  
   data-arc span      31979 days (87.55 yr)  
   first obs. used      1928-09-21  
   last obs. used      2016-04-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51858  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:32:10  

Additional Information
 Earth MOID = .889687 au 
 Jupiter MOID = 2.8333 au 
 T_jup = 3.622 
[ 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 11.6 mag n/a MPO265962  
rotation period rot_per 52.92 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2012) Minor Planet Bul. 39, 80-82.]

1123 Shapleya (1928 ST)          Discovered 1928-Sep-21 by Neujmin, G. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1928 ST = 1974 QQ2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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