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

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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1564035329556801 6.4673e-09  
a 2.225436690035405 4.5301e-09 au
q 1.877370529344673 1.4223e-08 au
i 6.418206114550276 2.798e-07 deg
node 79.86418540528376 3.1842e-06 deg
peri 317.319850741089 9.0783e-06 deg
M 321.9447375680333 6.9154e-06 deg
tp 2459524.683909504867
(2021-Nov-06.18390950)
2.3482e-05 TDB
period 1212.610411089665
3.32
3.7026e-06
1.014e-08
d
yr
n .2968801823798463 9.0649e-10 deg/d
Q 2.573502850726137 5.2386e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2917  
   data-arc span      33880 days (92.76 yr)  
   first obs. used      1928-09-21  
   last obs. used      2021-06-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41285  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:59:07  

Additional Information
 Earth MOID = .890458 au 
 Jupiter MOID = 2.83406 au 
 T_jup = 3.622 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.70   n/a E2021B10  
diameter diameter 11.282 km 0.136 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 52.92 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2012) Minor Planet Bull. 39, 80-82.]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.278   0.037 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

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

Alternate Designations
 1928 ST = 1974 QQ2 = 2016 FJ6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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