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768 Struveana (A913 TC)
Classification: Main-belt Asteroid          SPK-ID: 2000768
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2130862111088687 2.3134e-08  
a 3.13882887009329 1.2186e-08 au
q 2.46998771884598 7.313e-08 au
i 16.2706768155094 3.6586e-07 deg
node 38.89497751738698 1.6267e-06 deg
peri 16.68773372201911 2.8602e-06 deg
M 62.96071720495619 3.8648e-06 deg
tp 2458845.263935240053
(2019-Dec-27.76393524)
2.0338e-05 TDB
period 2031.186889076829
5.56
1.1829e-05
3.239e-08
d
yr
n .177236275960613 1.0321e-09 deg/d
Q 3.807670021340601 1.4783e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2795  
   data-arc span      33018 days (90.40 yr)  
   first obs. used      1930-10-30  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39941  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 18:51:36  

Additional Information
 Earth MOID = 1.48424 au 
 Jupiter MOID = 1.63732 au 
 T_jup = 3.115 
[ 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 10.29   n/a E2021B10  
diameter diameter 32.597 km 0.407 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 10.744 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Dose, E.V. (2020) Minor Planet Bull. 47, 324-330.]
geometric albedo albedo 0.137   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.717   0.033 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=15.46 deg.
U-B UB 0.242   0.049 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=15.46 deg.
Tholen spectral type spec_T X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

768 Struveana (A913 TC)          Discovered 1913-Oct-04 by Neujmin, G. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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