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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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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 52 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2132042435512665 2.3109e-08  
a 3.138502884614211 1.208e-08 au
q 2.46936075121657 7.2983e-08 au
i 16.27203473005439 3.6588e-07 deg
node 38.88697652972875 1.6261e-06 deg
peri 16.66273181814425 2.854e-06 deg
M 97.72182370506488 3.9971e-06 deg
tp 2458845.221205022110
(2019-Dec-27.72120502)
2.026e-05 TDB
period 2030.870471584887
5.56
1.1725e-05
3.21e-08
d
yr
n .1772638900594467 1.0234e-09 deg/d
Q 3.807645018011851 1.4655e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3005  
   data-arc span      33140 days (90.73 yr)  
   first obs. used      1930-10-30  
   last obs. used      2021-07-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39434  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 06:59:14  

Additional Information
 Earth MOID = 1.48394 au 
 Jupiter MOID = 1.63839 au 
 T_jup = 3.115 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456919.5 (2014-Sep-19.0) TDB
Reference: JPL 52 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2084477180944435 2.2893e-08  
q 2.487619387120085 7.187e-08 au
tp 2456813.456501073271
(2014-Jun-04.95650107)
1.522e-05 TDB
node 39.07191095951354 1.6274e-06 deg
peri 16.77631311127058 2.9265e-06 deg
i 16.23434582032396 3.648e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      3005  
   data-arc span      33140 days (90.73 yr)  
   first obs. used      1930-10-30  
   last obs. used      2021-07-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39434  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 06:59:14  

Additional Information
 Jupiter MOID = 1.63839 au 
 T_jup = 3.115 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.241061677177539E-16 -1.630629204000919E-15 1.306323831242383E-13 2.536931404100361E-15 -2.783067558342027E-14 -5.592923859077056E-17
q -1.630629204000919E-15 5.165332699928961E-15 -3.889765612104655E-13 -8.210184223657141E-15 9.396792309361097E-14 2.523928867230078E-16
tp 1.306323831242383E-13 -3.889765612104655E-13 2.316610540403939E-10 6.711151145480946E-12 2.377463358949941E-11 -8.625399005209716E-13
node 2.536931404100361E-15 -8.210184223657141E-15 6.711151145480946E-12 2.648464664220948E-12 -1.307067315260078E-12 -2.345750316352741E-13
peri -2.783067558342027E-14 9.396792309361097E-14 2.377463358949941E-11 -1.307067315260078E-12 8.564683751321395E-12 1.161648616431312E-13
i -5.592923859077056E-17 2.523928867230078E-16 -8.625399005209716E-13 -2.345750316352741E-13 1.161648616431312E-13 1.330768376320779E-13

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

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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