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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07452453281466666 3.244e-08  
a 2.782649483861342 1.0385e-08 au
q 2.575273831089603 9.2599e-08 au
i 7.768294319673907 4.0149e-06 deg
node 332.2133068824843 2.6542e-05 deg
peri 310.1378792828272 3.8221e-05 deg
M 16.37094619620696 2.7536e-05 deg
tp 2459123.399452300009
(2020-Sep-30.89945230)		 0.0001297 TDB
period 1695.454669469721
4.64		 9.4911e-06
2.599e-08		 d
yr
n .2123324241470847 1.1886e-09 deg/d
Q 2.990025136633082 1.1159e-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 = 1.56529 au 
 Jupiter MOID = 2.17563 au 
 T_jup = 3.315 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456307.5 (2013-Jan-15.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07194405516555677 3.2291e-08  
q 2.582048442845569 9.1338e-08 au
tp 2455724.797910467470
(2011-Jun-12.29791047)		 0.00013616 TDB
node 332.4512247265679 2.6662e-05 deg
peri 307.9933375510956 3.9016e-05 deg
i 7.749777279950643 4.0061e-06 deg
   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
 Jupiter MOID = 2.17563 au 
 T_jup = 3.315 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.042692176736006E-15 -2.93359896873855E-15 4.646555271154389E-13 1.742349799132426E-15 9.26407044723476E-14 4.910063434025984E-16
q -2.93359896873855E-15 8.342574248995756E-15 -1.426612576873248E-12 -3.918418638456746E-15 -2.810572904803265E-13 -1.364889734792623E-15
tp 4.646555271154389E-13 -1.426612576873248E-12 1.853849594693858E-8 7.328055338041077E-12 3.891908194846593E-9 2.461592842243951E-12
node 1.742349799132426E-15 -3.918418638456746E-15 7.328055338041077E-12 7.108830907000971E-10 -7.025457722977728E-10 7.798929008677994E-12
peri 9.26407044723476E-14 -2.810572904803265E-13 3.891908194846593E-9 -7.025457722977728E-10 1.522214082019049E-9 -7.319967238984558E-12
i 4.910063434025984E-16 -1.364889734792623E-15 2.461592842243951E-12 7.798929008677994E-12 -7.319967238984558E-12 1.604866221195051E-11

[ 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 11.67   n/a E2021B10  
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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