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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1563225713294288 4.6625e-08  
a 2.225358617201926 6.6956e-09 AU
q 1.877484836030819 1.0357e-07 AU
i 6.420155676175737 4.2434e-06 deg
node 79.95578888629026 4.713e-05 deg
peri 317.2652689060137 4.8688e-05 deg
M 271.1034727929288 1.371e-05 deg
tp 2457099.919949589661
(2015-Mar-18.41994959)
4.6735e-05 JED
period 1212.546600399746
3.32
5.4724e-06
1.498e-08
d
yr
n .2968958058035188 1.3399e-09 deg/d
Q 2.573232398373033 7.7423e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1268  
   data-arc span      31333 days (85.79 yr)  
   first obs. used      1928-09-21  
   last obs. used      2014-07-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54232  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 11:57:57  

Additional Information
 Earth MOID = .889938 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 Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) 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 (094)
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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