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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1562435927195154 4.5676e-08  
a 2.22515801972511 6.6376e-09 AU
q 1.877491336354617 1.016e-07 AU
i 6.419986021059678 4.1882e-06 deg
node 79.95288752953088 4.6524e-05 deg
peri 317.2855768731861 4.8121e-05 deg
M 330.4627608845428 1.3828e-05 deg
tp 2457099.973434199382
(2015-Mar-18.47343420)
4.6758e-05 JED
period 1212.382652684605
3.32
5.4248e-06
1.485e-08
d
yr
n .2969359543398647 1.3286e-09 deg/d
Q 2.572824703095603 7.6747e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      1277  
   data-arc span      31365 days (85.87 yr)  
   first obs. used      1928-09-21  
   last obs. used      2014-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54313  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 13:54:44  

Additional Information
 Earth MOID = .890891 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. 2014-Mar-01) 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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