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1977 Shura (1970 QY)
Classification: Main-belt Asteroid          SPK-ID: 2001977
[ 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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07396873276229443 3.2527e-08  
a 2.780979013488749 1.0204e-08 au
q 2.57527352002245 9.2656e-08 au
i 7.766123669477433 4.0137e-06 deg
node 332.2345731234369 2.6565e-05 deg
peri 310.4202603219417 3.8351e-05 deg
M 333.6190971666219 2.7697e-05 deg
tp 2459124.631541229648
(2020-Oct-02.13154123)		 0.0001303 TDB
period 1693.928184524958
4.64		 9.3232e-06
2.553e-08		 d
yr
n .2125237677068096 1.1697e-09 deg/d
Q 2.986684506955047 1.0959e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2656  
   data-arc span      24331 days (66.61 yr)  
   first obs. used      1954-03-07  
   last obs. used      2020-10-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42646  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:13:42  

Additional Information
 Earth MOID = 1.56713 au 
 Jupiter MOID = 2.17997 au 
 T_jup = 3.316 
[ 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 11.6   n/a MPO384767  
diameter diameter 17.211 km 0.117 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 7.461 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Albers, K.; Kragh, K.; Monnier, A.; Pligge, Z.; et al. (2010) Minor Planet Bull. 37, 152-158.]
geometric albedo albedo 0.150   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B Sq   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1977 Shura (1970 QY)          Discovered 1970-Aug-30 by Smirnova, T. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1970 QY = 1942 RW = 1952 UT1 = 1968 DE 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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