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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1356518872447961 3.1364e-08  
a 3.137190152340116 1.359e-08 au
q 2.71162438752939 9.4833e-08 au
i 2.304152990610068 3.9522e-06 deg
node 67.02377633321949 9.3953e-05 deg
peri 33.88485722178851 9.5219e-05 deg
M 187.1439693681912 1.5977e-05 deg
tp 2459975.022176781789
(2023-Jan-30.52217678)
9.1317e-05 TDB
period 2029.596435595144
5.56
1.3188e-05
3.611e-08
d
yr
n .1773751636957503 1.1526e-09 deg/d
Q 3.562755917150842 1.5434e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2947  
   data-arc span      41491 days (113.60 yr)  
   first obs. used      1906-11-11  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42299  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:17:23  

Additional Information
 Earth MOID = 1.7289 au 
 Jupiter MOID = 1.58883 au 
 T_jup = 3.196 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456228.5 (2012-Oct-28.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1389851113771611 3.1923e-08  
q 2.690332184183112 9.7633e-08 au
tp 2455916.355332040245
(2011-Dec-20.85533204)
8.3569e-05 TDB
node 67.11781299922073 9.3334e-05 deg
peri 31.55951170271013 9.4553e-05 deg
i 2.315542933970397 3.9729e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2947  
   data-arc span      41491 days (113.60 yr)  
   first obs. used      1906-11-11  
   last obs. used      2020-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42299  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:17:23  

Additional Information
 Jupiter MOID = 1.58883 au 
 T_jup = 3.196 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.019080385365508E-15 -3.098649193817644E-15 -3.506195833527049E-13 -1.081579202310772E-15 -6.948724394776645E-14 3.811782040932084E-17
q -3.098649193817644E-15 9.532147590967703E-15 1.15811157984533E-12 6.613095273876769E-15 2.257633888750611E-13 -3.011279628093455E-16
tp -3.506195833527049E-13 1.15811157984533E-12 6.983740383621643E-9 -1.43136547576167E-12 1.287254264172397E-9 -1.88470472551565E-13
node -1.081579202310772E-15 6.613095273876769E-15 -1.43136547576167E-12 8.711264956221566E-9 -8.703644259216903E-9 -6.594702790421086E-11
peri -6.948724394776645E-14 2.257633888750611E-13 1.287254264172397E-9 -8.703644259216903E-9 8.940176095698743E-9 6.582898036906376E-11
i 3.811782040932084E-17 -3.011279628093455E-16 -1.88470472551565E-13 -6.594702790421086E-11 6.582898036906376E-11 1.578372952899715E-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 11.0   n/a MPO492756 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. 2019-August); 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.]
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 1.95824764054094 1.95824684521323 1.95824843586887 3.66472331203832 3.54473057199699 2425301.090794561 1.46641574338548 67.1485252046564 21.1806233981376 68.9834567344068 2594511.06959488 T 30 CATAB v2.0f-lin.ifort 2020-Jun-23 15:17:35 2020-Jun-23 15:17
1938-Apr-13 04:58 00:01 Jupiter 1.61945536690044 1.61945494462929 1.61945578917121 1.75403205505459 1.42498068853345 2429001.706663491 1.35329874509971 75.2898915728732 42.9206806013809 -77.1797943871165 2043626.15623346 T 30 CATAB v2.0f-lin.ifort 2020-Jun-23 15:17:35 2020-Jun-23 15:17
1948-May-28 23:12 00:01 Jupiter 1.75658042691383 1.75657990227033 1.75658095155702 1.90795220323657 1.63581241416145 2432700.466714774 1.1239921450376 48.8170423808227 15.4275079311979 86.5146850369419 2282915.67796837 T 30 CATAB v2.0f-lin.ifort 2020-Jun-23 15:17:35 2020-Jun-23 15:17
2010-Jun-05 23:18 < 00:01 Jupiter 1.74971169567849 1.74971128531044 1.74971210604644 2.52040197156059 2.32039670356176 2455353.470972093 0.210152090043383 44.6461071052283 7.08219638965257 89.9160931181497 2823350.0675387 T 30 CATAB v2.0f-lin.ifort 2020-Jun-23 15:17:35 2020-Jun-23 15:17
2020-Jul-16 02:43 < 00:01 Jupiter 1.60798278398531 1.60798245362078 1.60798311434948 1.54607496686912 1.15621188882899 2459046.613419288 0.293231600044703 78.6743672741204 56.3148551852774 50.981287514038 2709572.03999296 T 30 CATAB v2.0f-lin.ifort 2020-Jun-23 15:17:35 2020-Jun-23 15:17
2030-Sep-08 19:11 < 00:01 Jupiter 1.96547425938455 1.96547374984851 1.9654747689206 2.62294816995486 2.45315219548961 2462753.299234698 0.437381834984375 41.2840924836278 11.8579106676856 81.5432974075858 2815684.82111783 T 30 CATAB v2.0f-lin.ifort 2020-Jun-23 15:17:35 2020-Jun-23 15:17
2082-Jul-20 09:36 00:01 Jupiter 1.96507347900541 1.96507268669359 1.96507427131735 3.70410204618452 3.58584645155425 2481695.900184796 1.28801586979531 58.9359597493361 22.5575483956218 66.4057489664967 2466376.30318706 T 30 CATAB v2.0f-lin.ifort 2020-Jun-23 15:17:35 2020-Jun-23 15:17
2092-Sep-05 08:49 00:02 Jupiter 1.60799737022987 1.6079969463696 1.60799779408977 1.75083994827706 1.41842455200679 2485395.867071302 1.56909649629741 87.8470063630568 44.7117472230748 -73.7449833172421 2003014.46280474 T 30 CATAB v2.0f-lin.ifort 2020-Jun-23 15:17:35 2020-Jun-23 15:17
2102-Oct-20 23:05 00:02 Jupiter 1.74562122218228 1.74562032652657 1.7456221178371 1.89445841614433 1.61818377456668 2489092.461690733 1.73986099442608 48.9851406428963 18.5246288854126 84.7483375076365 1447286.30280906 T 30 CATAB v2.0f-lin.ifort 2020-Jun-23 15:17:35 2020-Jun-23 15:17
2164-Nov-01 07:36 00:03 Jupiter 1.75639336495272 1.75639208373916 1.75639464616728 2.56784205033453 2.37261685235788 2511749.816686464 2.88524817281803 114.898046479534 11.0414957496433 81.405104401172 1807422.4191373 T 30 CATAB v2.0f-lin.ifort 2020-Jun-23 15:17:35 2020-Jun-23 15:17
2174-Dec-11 03:10 00:03 Jupiter 1.59981441790747 1.59981378475301 1.59981505106421 1.54616745135132 1.15400728862354 2515441.631639275 3.08282343468526 162.607589489284 61.6657163793046 79.080677097701 2787915.50205929 T 30 CATAB v2.0f-lin.ifort 2020-Jun-23 15:17:35 2020-Jun-23 15:17
2185-Jan-30 19:47 00:03 Jupiter 1.9596970033939 1.95969519182463 1.95969881496262 2.62563131420503 2.4555035072879 2519145.324258000 3.15154729545536 87.6022056365229 21.6814387518399 56.9986076416987 1528749.47313689 T 30 CATAB v2.0f-lin.ifort 2020-Jun-23 15:17:35 2020-Jun-23 15:17

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