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JPL Small-Body Database Browser
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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2129686506807984 4.0948e-08  
a 3.138647125788668 1.3272e-08 au
q 2.470213682446289 1.3112e-07 au
i 16.27102972879453 4.8225e-06 deg
node 38.90323584914391 1.4166e-05 deg
peri 16.69388554312088 1.7284e-05 deg
M 27.51151738900402 9.2779e-06 deg
tp 2458845.288388726636
(2019-Dec-27.78838873)
5.21e-05 TDB
period 2031.010477115449
5.56
1.2883e-05
3.527e-08
d
yr
n .177251670563163 1.1243e-09 deg/d
Q 3.807080569131046 1.6099e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2321  
   data-arc span      32605 days (89.27 yr)  
   first obs. used      1930-10-30  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42129  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:36:27  

Additional Information
 Earth MOID = 1.48528 au 
 Jupiter MOID = 1.63682 au 
 T_jup = 3.115 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456347.5 (2013-Feb-24.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2083421894428296 4.0801e-08  
q 2.48824342311066 1.2991e-07 au
tp 2456813.017902512019
(2014-Jun-04.51790251)
5.2914e-05 TDB
node 39.08146369404664 1.4201e-05 deg
peri 16.64323951894328 1.7484e-05 deg
i 16.23457237926682 4.8131e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2321  
   data-arc span      32605 days (89.27 yr)  
   first obs. used      1930-10-30  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42129  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:36:27  

Additional Information
 Jupiter MOID = 1.63682 au 
 T_jup = 3.115 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.664736297950222E-15 -5.282890683860679E-15 -3.413147083318095E-13 2.733725945627463E-15 -9.381933388887126E-14 -8.6865159793081E-16
q -5.282890683860679E-15 1.687597630028815E-14 1.021738649454462E-12 -1.069342050837437E-14 2.826365264617896E-13 4.024366502981397E-15
tp -3.413147083318095E-13 1.021738649454462E-12 2.799854734144649E-9 -4.15448973441893E-12 5.553782474313988E-10 -2.016823809593432E-12
node 2.733725945627463E-15 -1.069342050837437E-14 -4.15448973441893E-12 2.016783567945535E-10 -1.941485319174607E-10 -6.573585952522647E-12
peri -9.381933388887126E-14 2.826365264617896E-13 5.553782474313988E-10 -1.941485319174607E-10 3.056811046871626E-10 5.844651795842738E-12
i -8.6865159793081E-16 4.024366502981397E-15 -2.016823809593432E-12 -6.573585952522647E-12 5.844651795842738E-12 2.316565603940959E-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 10.2   n/a MPO502160  
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 8.76 h n/a LCDB (Rev. 2019-August); 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:
[Gil-Hutton, R.; Canada, M. (2003) Revista Mexicana de Astronomica y Astrofisica 39, 69-76.]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
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 1.70734049053568 1.70733944422832 1.70734153691242 3.49684914942438 3.35197571698309 2415141.544543805 2.15477920536882 645.65309460762 22.2862849093848 85.3847264263817 2871749.76897112 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:36:39 2020-Feb-22 15:36
1910-Dec-09 18:44 00:02 Jupiter 1.73709549513832 1.73709440432829 1.73709658594835 3.84204286483361 3.71296059635813 2419015.280227978 1.81772900119419 203.253082926672 53.1902453475702 88.3890865243705 2825322.73126253 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:36:39 2020-Feb-22 15:36
1984-May-06 04:56 < 00:01 Jupiter 1.98081642954836 1.98081561584142 1.98081724325688 2.51390644976753 2.33762699795235 2445826.705764179 0.920052961829158 109.225967784033 13.6926160912603 63.0469195068569 2122174.4353867 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:36:39 2020-Feb-22 15:36
1994-Oct-05 17:56 < 00:01 Jupiter 1.64793735632324 1.64793691976127 1.64793779288737 3.67146277498462 3.52869095930075 2449631.247558846 0.437086371971946 242.637855215454 16.3926479334563 87.0334139016991 3195340.99053726 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:36:39 2020-Feb-22 15:36
2005-May-10 00:47 < 00:01 Jupiter 1.91479425418858 1.91479370780398 1.91479480059027 3.89368777957223 3.77837142913345 2453500.532736180 0.290205816786437 541.192079886465 19.9553083333616 88.1789523294103 3385312.98428354 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:36:39 2020-Feb-22 15:36
2078-Aug-27 16:20 00:01 Jupiter 1.79850288925773 1.79850202733439 1.79850375121368 3.04998649998562 2.89145259348573 2480273.180417339 1.28040164123669 487.037298271286 17.7894063879747 84.6765341426429 2405491.31258573 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:36:39 2020-Feb-22 15:36
2089-Mar-16 12:11 00:01 Jupiter 1.68328649671015 1.68328591134126 1.68328708207913 3.79527375002018 3.66028843821135 2484127.007949888 1.27193138514138 249.738425771451 27.2984341047959 88.7033490764513 3247477.81093914 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:36:39 2020-Feb-22 15:36
2173-Jan-17 21:44 00:03 Jupiter 1.68887718750452 1.68887623307326 1.68887814205378 3.39535285108802 3.24428128473659 2514749.405769326 2.84930362081092 886.179044605738 24.4009817631425 86.8362344640963 2849405.04577244 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:36:39 2020-Feb-22 15:36
2183-Aug-22 00:50 00:03 Jupiter 1.81880870500015 1.81880685371683 1.81881055628823 3.92507908923822 3.80458174126243 2518617.534581030 2.9845257168723 406.639293904021 82.1758412195847 84.6536371761118 1900875.27133602 T 38 CATAB v2.0f-lin.ifort 2020-Feb-22 15:36:39 2020-Feb-22 15:36
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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