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621 Werdandi (A906 VM)
Classification: Main-belt Asteroid          SPK-ID: 2000621
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1357316438852802 3.0667e-08  
a 3.134608917588505 1.4567e-08 au
q 2.709143296266758 9.2823e-08 au
i 2.297977527048292 3.7616e-06 deg
node 66.8218112107285 9.131e-05 deg
peri 34.96863070479688 9.2431e-05 deg
M 221.5159777605933 1.5498e-05 deg
tp 2459980.277396893586
(2023-Feb-04.77739689)
8.8251e-05 TDB
period 2027.092066956225
5.55
1.413e-05
3.869e-08
d
yr
n .1775943016444029 1.238e-09 deg/d
Q 3.560074538910252 1.6544e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3135  
   data-arc span      41670 days (114.09 yr)  
   first obs. used      1906-11-11  
   last obs. used      2020-12-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41297  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:48:16  

Additional Information
 Earth MOID = 1.72626 au 
 Jupiter MOID = 1.58785 au 
 T_jup = 3.197 
[ 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 11.09   n/a E2021B10 IRAS observations used: 9
diameter diameter 29.726 km 0.491 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 11.776 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Strabla, L.; Quadri, U.; Girelli, R.; Pilcher, F. (2012) Minor Planet Bull. 39, 154-155.]
[Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.127   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.650   0.014 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=13.59, mean=13.59, max.=13.59) deg.
U-B UB 0.285   0.035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=13.59, mean=13.59, max.=13.59) deg.
Tholen spectral type spec_T FCX:   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

621 Werdandi (A906 VM)          Discovered 1906-Nov-11 by Kopff, A. at Heidelberg
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
1928-Feb-24 14:11 00:01 Jupiter 1.95824764586673 1.95824685136051 1.95824844037317 3.66472336421629 3.5447306262731 2425301.090825200 1.42843642156833 65.3087416366521 20.5357506708014 67.8332608445299 2645336.95616971 T 36 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:25 2021-Feb-24 00:48
1938-Apr-13 04:58 00:01 Jupiter 1.61945536102921 1.61945493942482 1.61945578263322 1.75403207008892 1.42498070570875 2429001.706688291 1.32383799031064 72.0688906221437 42.6390499879297 -75.690345951284 2046854.96037069 T 36 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:25 2021-Feb-24 00:48
1948-May-28 23:12 00:01 Jupiter 1.75658042324473 1.75657989890577 1.75658094758333 1.90795218147441 1.63581238816313 2432700.466734804 1.10232217556215 48.3931179009728 15.2280162691097 86.2036271231853 2287453.81446332 T 36 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:25 2021-Feb-24 00:48
2010-Jun-05 23:18 < 00:01 Jupiter 1.74971167854613 1.74971129275335 1.7497120643388 2.52040181016441 2.32039652621137 2455353.470959650 0.197403082343323 42.3952509380984 6.7089919673645 89.818315115573 2999695.8405235 T 36 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:25 2021-Feb-24 00:48
2020-Jul-16 02:43 < 00:01 Jupiter 1.60798278355101 1.60798245813487 1.60798310896688 1.54607496999757 1.15621189288928 2459046.613419906 0.263265564716343 76.923564023328 55.2644334304055 47.9191747945115 2727029.08395119 T 36 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:25 2021-Feb-24 00:48
2030-Sep-08 19:11 < 00:01 Jupiter 1.96547428132734 1.96547382400675 1.96547473864783 2.62294821352122 2.45315224403266 2462753.299225627 0.402149820018774 40.6471468150646 10.7528014772037 82.6936457684135 3085453.97130542 T 36 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:25 2021-Feb-24 00:48
2082-Jul-20 09:36 00:01 Jupiter 1.96507344595256 1.96507272380559 1.96507416809964 3.70410170840157 3.58584610060988 2481695.900148137 1.22585996533412 56.4896818759519 20.9591276348739 68.2390586952527 2676719.66667071 T 36 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:25 2021-Feb-24 00:48
2092-Sep-05 08:49 00:01 Jupiter 1.60799735075903 1.60799695215014 1.60799774936755 1.75083986953265 1.41842445031141 2485395.867040832 1.4906999130627 83.2889946598895 43.0248990703386 -75.1260419658331 2098341.33602881 T 36 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:25 2021-Feb-24 00:48
2102-Oct-20 23:05 00:02 Jupiter 1.74562124965295 1.7456204156749 1.74562208363021 1.89445848320083 1.61818385779067 2489092.461660830 1.65552779098778 47.9530830176877 17.6376645558478 84.5200037613756 1553317.21278446 T 36 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:25 2021-Feb-24 00:48
2164-Nov-01 07:36 00:03 Jupiter 1.7563933176257 1.75639212325289 1.75639451199952 2.56784179882627 2.37261657467797 2511749.816633220 2.76085221160219 110.400957832096 10.2002373309203 81.7089114991266 1918664.30526328 T 36 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:25 2021-Feb-24 00:48
2174-Dec-11 03:09 00:03 Jupiter 1.59981442836921 1.59981381835988 1.59981503838063 1.5461674770816 1.15400732609781 2515441.631578211 2.95034525602421 155.113735990968 61.5527788477736 78.7034175869151 2809706.96482695 T 36 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:25 2021-Feb-24 00:48
2185-Jan-30 19:47 00:03 Jupiter 1.9596970623533 1.95969535915668 1.95969876554948 2.62563149042778 2.45550370101589 2519145.324202588 3.01852292206488 83.6516217407849 21.1148089848571 57.6741151539654 1584267.10267825 T 36 CATAB v2.0f-lin.ifort 2021-Feb-24 00:48:25 2021-Feb-24 00:48

Alternate Designations
 A906 VM = 1952 BO 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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