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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 51 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2132042435349887 2.3109e-08  
a 3.138502884651123 1.2084e-08 au
q 2.4693607512967 7.2986e-08 au
i 16.27203472976544 3.6588e-07 deg
node 38.88697652671632 1.6261e-06 deg
peri 16.66273182103454 2.8541e-06 deg
M 97.72182369273334 3.9977e-06 deg
tp 2458845.221205081951
(2019-Dec-27.72120508)
2.0262e-05 TDB
period 2030.870471620715
5.56
1.1729e-05
3.211e-08
d
yr
n .1772638900563195 1.0238e-09 deg/d
Q 3.807645018005546 1.4661e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2988  
   data-arc span      33114 days (90.66 yr)  
   first obs. used      1930-10-30  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39527  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:32:38  

Additional Information
 Earth MOID = 1.48394 au 
 Jupiter MOID = 1.63839 au 
 T_jup = 3.115 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456910.5 (2014-Sep-10.0) TDB
Reference: JPL 51 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2084334227506506 2.2895e-08  
q 2.487613912751379 7.1872e-08 au
tp 2456813.447478485394
(2014-Jun-04.94747849)
1.5222e-05 TDB
node 39.07235163061575 1.6274e-06 deg
peri 16.77354552577001 2.9266e-06 deg
i 16.23447135589517 3.648e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2988  
   data-arc span      33114 days (90.66 yr)  
   first obs. used      1930-10-30  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39527  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:32:38  

Additional Information
 Jupiter MOID = 1.63839 au 
 T_jup = 3.115 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.241701810329983E-16 -1.630767423838607E-15 1.306900897003862E-13 2.536314981170053E-15 -2.782326820732848E-14 -5.615508432572098E-17
q -1.630767423838607E-15 5.165639154730598E-15 -3.891158584327155E-13 -8.210089786709516E-15 9.394883348811487E-14 2.530607102636788E-16
tp 1.306900897003862E-13 -3.891158584327155E-13 2.317110618300748E-10 6.71113283040525E-12 2.378026028335435E-11 -8.627261306977004E-13
node 2.536314981170053E-15 -8.210089786709516E-15 6.71113283040525E-12 2.648495325180783E-12 -1.307041165755748E-12 -2.345639374485083E-13
peri -2.782326820732848E-14 9.394883348811487E-14 2.378026028335435E-11 -1.307041165755748E-12 8.565107566022686E-12 1.161429691953417E-13
i -5.615508432572098E-17 2.530607102636788E-16 -8.627261306977004E-13 -2.345639374485083E-13 1.161429691953417E-13 1.330788701447316E-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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1900-May-02 01:04 00:02 Jupiter 1.7073402578368 1.70733933193725 1.70734118381128 3.49684954282102 3.35197610802812 2415141.544443402 2.02328938128156 579.34665459509 2.95025782005626 84.9777921225454 13493652.5044192 T 51 CATAB v2.0g-lin.ifort 2021-Jul-08 11:33:59 2021-Jul-08 11:33
1910-Dec-09 18:43 00:02 Jupiter 1.73709548806681 1.73709458158148 1.73709639455243 3.84204237729566 3.71296009206164 2419015.280173229 1.70539558482393 95.7226987554843 39.2456159098803 -75.872161268415 5083464.03447698 T 51 CATAB v2.0g-lin.ifort 2021-Jul-08 11:33:59 2021-Jul-08 11:33
1984-May-06 04:56 < 00:01 Jupiter 1.98081629197411 1.98081581350344 1.98081677044569 2.5139076985037 2.33762832916086 2445826.705724081 0.828105932053188 76.4222119891639 3.39367376368759 63.4023627252438 11899450.8241261 T 51 CATAB v2.0g-lin.ifort 2021-Jul-08 11:33:59 2021-Jul-08 11:33
1994-Oct-05 17:57 < 00:01 Jupiter 1.64793720789767 1.64793697968612 1.64793743611138 3.67146274353228 3.52869091426126 2449631.247611148 0.38506733856741 103.10953082819 3.09794448572252 84.2773055567919 15499627.6444276 T 51 CATAB v2.0g-lin.ifort 2021-Jul-08 11:33:59 2021-Jul-08 11:33
2005-May-10 00:47 < 00:01 Jupiter 1.91479425138273 1.91479400732671 1.91479449544431 3.89368705050739 3.77837067829267 2453500.532799497 0.205420159467444 178.803905469747 4.5424942856561 86.6181568874124 26185324.7463272 T 51 CATAB v2.0g-lin.ifort 2021-Jul-08 11:33:59 2021-Jul-08 11:33
2078-Aug-27 16:20 00:01 Jupiter 1.79850282110853 1.79850227707368 1.79850336516967 3.04998673082955 2.8914528317144 2480273.180611678 1.11808268414563 355.816617301592 3.58714290326185 84.5068585518211 10733742.657324 T 51 CATAB v2.0g-lin.ifort 2021-Jul-08 11:33:59 2021-Jul-08 11:33
2089-Mar-16 12:12 00:01 Jupiter 1.68328630713775 1.68328584005538 1.68328677422012 3.79527329870607 3.66028795553057 2484127.008224261 1.13640064541413 104.569304429787 21.5630349411815 -87.916265388013 6125596.32350138 T 51 CATAB v2.0g-lin.ifort 2021-Jul-08 11:33:59 2021-Jul-08 11:33
2173-Jan-17 21:45 00:03 Jupiter 1.68887719674106 1.68887647468357 1.68887791890099 3.3953521122667 3.24428051321113 2514749.406382449 2.60019822396817 674.903256409387 3.29940538933363 86.2828364543974 8163644.72094077 T 51 CATAB v2.0g-lin.ifort 2021-Jul-08 11:33:59 2021-Jul-08 11:33
2183-Aug-22 00:51 00:03 Jupiter 1.81880816752245 1.81880647129236 1.81880986375657 3.92507822220635 3.80458081127425 2518617.535249864 2.7340616261354 190.835905227783 49.6244111964173 69.0756483388207 4000900.62194387 T 51 CATAB v2.0g-lin.ifort 2021-Jul-08 11:33:59 2021-Jul-08 11:33
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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