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JPL Small-Body Database Browser
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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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1356518870231353 3.1459e-08  
a 3.137190152211217 1.3701e-08 au
q 2.711624388113369 9.5032e-08 au
i 2.304153003317473 3.9838e-06 deg
node 67.02377591600802 9.4922e-05 deg
peri 33.88485790544412 9.6217e-05 deg
M 187.1439691647948 1.6129e-05 deg
tp 2459975.022177868430
(2023-Jan-30.52217787)
9.2057e-05 TDB
period 2029.596435470058
5.56
1.3296e-05
3.64e-08
d
yr
n .1773751637066821 1.162e-09 deg/d
Q 3.562755916309066 1.556e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2889  
   data-arc span      41442 days (113.46 yr)  
   first obs. used      1906-11-11  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42678  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:09:21  

Additional Information
 Earth MOID = 1.7289 au 
 Jupiter MOID = 1.58883 au 
 T_jup = 3.196 
[ 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 11.0   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 1.95824764138239 1.95824684583705 1.95824843692794 3.66472342306333 3.54473068683274 2425301.090807513 1.47616591624781 67.5687429386136 21.3070712494026 69.222416223784 2584816.40351527 T 29 CATAB v2.0f-lin.ifort 2020-May-20 01:09:31 2020-May-20 01:09
1938-Apr-13 04:58 00:01 Jupiter 1.61945536686211 1.6194549444341 1.61945578928975 1.75403207403629 1.42498071188964 2429001.706671126 1.36086057125561 76.0841299180193 42.9765807110652 -77.4944870427339 2042891.73420923 T 29 CATAB v2.0f-lin.ifort 2020-May-20 01:09:31 2020-May-20 01:09
1948-May-28 23:12 00:01 Jupiter 1.75658042669179 1.75657990198059 1.75658095140268 1.90795219249735 1.63581240159835 2432700.466719875 1.12954711711893 49.0012366137818 15.4674467370231 86.5992576986472 2282134.97199002 T 29 CATAB v2.0f-lin.ifort 2020-May-20 01:09:31 2020-May-20 01:09
2010-Jun-05 23:18 < 00:01 Jupiter 1.74971169355338 1.7497112769523 1.74971211015437 2.52040200191587 2.32039673628011 2455353.470975794 0.213288248707809 45.0802746677215 7.17732863190616 89.9455175945134 2781827.45860284 T 29 CATAB v2.0f-lin.ifort 2020-May-20 01:09:31 2020-May-20 01:09
2020-Jul-16 02:43 < 00:01 Jupiter 1.60798278480379 1.60798245331893 1.60798311628828 1.54607496326359 1.15621188423961 2459046.613423983 0.300510972138281 79.1953801576148 56.5932979048761 51.8632885427937 2705723.37515672 T 29 CATAB v2.0f-lin.ifort 2020-May-20 01:09:31 2020-May-20 01:09
2030-Sep-08 19:11 < 00:01 Jupiter 1.96547426255042 1.96547374036361 1.96547478473712 2.62294818593476 2.45315221285853 2462753.299232822 0.446112087451915 41.4863845330437 12.1236019267552 81.2704199988548 2758909.74258171 T 29 CATAB v2.0f-lin.ifort 2020-May-20 01:09:31 2020-May-20 01:09
2082-Jul-20 09:36 00:01 Jupiter 1.96507347542487 1.9650726659281 1.96507428492175 3.7041020166594 3.58584642083642 2481695.900181883 1.30361343115189 59.506119740836 22.9074988069781 65.9211142745762 2422069.3928975 T 29 CATAB v2.0f-lin.ifort 2020-May-20 01:09:31 2020-May-20 01:09
2092-Sep-05 08:49 00:02 Jupiter 1.60799736856969 1.60799693820191 1.60799779893711 1.75083995335887 1.41842455789613 2485395.867071787 1.5888058698548 88.941347471543 45.1350391891498 -73.3866745815857 1979985.9740542 T 29 CATAB v2.0f-lin.ifort 2020-May-20 01:09:31 2020-May-20 01:09
2102-Oct-20 23:05 00:02 Jupiter 1.74562122488263 1.74562031407832 1.74562213568605 1.89445843073449 1.6181837921117 2489092.461687684 1.76111211802222 49.337195636867 18.7350171486329 84.8032904276818 1423594.90154121 T 29 CATAB v2.0f-lin.ifort 2020-May-20 01:09:31 2020-May-20 01:09
2164-Nov-01 07:36 00:03 Jupiter 1.75639336146916 1.75639205854613 1.7563946643932 2.56784210246051 2.37261690836979 2511749.816691223 2.91664549454378 115.978958899928 11.23401958256 81.3251753378201 1783877.52209412 T 29 CATAB v2.0f-lin.ifort 2020-May-20 01:09:31 2020-May-20 01:09
2174-Dec-11 03:10 00:03 Jupiter 1.59981441911082 1.5998137803045 1.59981505791959 1.54616745971475 1.15400730017417 2515441.631626688 3.11630096339935 164.506618238572 61.6967245528068 79.1858014983216 2782454.67253189 T 29 CATAB v2.0f-lin.ifort 2020-May-20 01:09:31 2020-May-20 01:09
2185-Jan-30 19:47 00:03 Jupiter 1.95969700812609 1.95969516949529 1.95969884675632 2.62563133027383 2.45550352489506 2519145.324254919 3.18521420977187 88.6221361952238 21.8509200604343 56.8599783484054 1514697.73017849 T 29 CATAB v2.0f-lin.ifort 2020-May-20 01:09:31 2020-May-20 01:09

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