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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 ]

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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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07455465060589728 1.2855e-08  
a 2.781414080483123 9.9032e-09 au
q 2.57404672552238 3.7703e-08 au
i 7.770546704699439 7.8858e-07 deg
node 332.2092022541595 7.5325e-06 deg
peri 309.5652121803041 2.352e-05 deg
M 58.51460857399721 1.6979e-05 deg
tp 2459121.103317942501
(2020-Sep-28.60331794)
8.0296e-05 TDB
period 1694.325706978358
4.64
9.049e-06
2.477e-08
d
yr
n .2124739054110322 1.1348e-09 deg/d
Q 2.988781435443864 1.0642e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2823  
   data-arc span      24626 days (67.42 yr)  
   first obs. used      1954-03-07  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41738  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 08:14:12  

Additional Information
 Earth MOID = 1.56582 au 
 Jupiter MOID = 2.1741 au 
 T_jup = 3.316 
[ 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 11.68   n/a MPO636091  
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

Alternate Designations
 1970 QY = 1942 RW = 1952 UT1 = 1968 DE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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