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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 ]

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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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1356518864299347 3.1484e-08  
a 3.137190151965062 1.3738e-08 au
q 2.711624389761588 9.5084e-08 au
i 2.304153035168671 3.9931e-06 deg
node 67.02377778005841 9.5297e-05 deg
peri 33.88485674150197 9.6603e-05 deg
M 187.1439685664736 1.6185e-05 deg
tp 2459975.022181126930
(2023-Jan-30.52218113)
9.233e-05 TDB
period 2029.596435231184
5.56
1.3331e-05
3.65e-08
d
yr
n .1773751637275583 1.1651e-09 deg/d
Q 3.562755914168537 1.5601e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2859  
   data-arc span      41216 days (112.84 yr)  
   first obs. used      1906-11-11  
   last obs. used      2019-09-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42804  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:32:23  

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 1.95824763973559 1.95824684411701 1.95824843535438 3.66472336983858 3.54473063170366 2425301.090808910 1.47953542532894 67.7093358271749 21.3476239748251 69.300410615956 2581659.12359475 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 15:32:37 2020-Feb-22 15:32
1938-Apr-13 04:58 00:01 Jupiter 1.61945536522381 1.61945494272428 1.61945578772298 1.754032037508 1.42498066655506 2429001.706667770 1.3634567696528 76.3647051809972 42.9956583027349 -77.6083999449161 2042558.92400047 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 15:32:37 2020-Feb-22 15:32
1948-May-28 23:12 00:01 Jupiter 1.75658042881143 1.75657990407937 1.7565809535431 1.907952200603 1.63581241140819 2432700.466723411 1.13144184698664 49.0843067130488 15.4783562549313 86.6284108654505 2281958.49159068 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 15:32:37 2020-Feb-22 15:32
2010-Jun-05 23:18 < 00:01 Jupiter 1.7497116879738 1.74971126913925 1.74971210680825 2.52040192973083 2.32039665720785 2455353.470969348 0.214347274147551 45.2149325205253 7.2108691439478 89.9579790445088 2767106.69146986 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 15:32:37 2020-Feb-22 15:32
2020-Jul-16 02:43 < 00:01 Jupiter 1.60798278629195 1.60798245449165 1.60798311809187 1.5460749756391 1.15621190120966 2459046.613413098 0.303000832485547 79.3877676492264 56.6982704543823 52.2047876627371 2704628.34938635 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 15:32:37 2020-Feb-22 15:32
2030-Sep-08 19:11 < 00:01 Jupiter 1.96547427036962 1.96547374387717 1.96547479686195 2.62294822391272 2.45315225416402 2462753.299229005 0.449132759843108 41.5681995739914 12.2151211055643 81.1803165949281 2740451.99713247 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 15:32:37 2020-Feb-22 15:32
2082-Jul-20 09:36 00:01 Jupiter 1.96507346550907 1.96507265014999 1.96507428086827 3.70410194133879 3.58584634242529 2481695.900173917 1.30892735926477 59.6936430279629 23.0235059029384 65.7514284267569 2407319.26302544 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 15:32:37 2020-Feb-22 15:32
2092-Sep-05 08:49 00:02 Jupiter 1.60799736404163 1.60799693127715 1.60799779680576 1.75083991474665 1.41842450918917 2485395.867060692 1.59555782335236 89.3098048139639 45.2941344352042 -73.2560621596415 1971466.81653003 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 15:32:37 2020-Feb-22 15:32
2102-Oct-20 23:05 00:02 Jupiter 1.74562123376458 1.74562031788212 1.74562214964605 1.89445851147633 1.61818388816441 2489092.461670113 1.76841249134409 49.4812099638056 18.8012382520072 84.8224136006417 1415920.89074328 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 15:32:37 2020-Feb-22 15:32
2164-Nov-01 07:36 00:03 Jupiter 1.75639334896335 1.75639203852301 1.75639465940458 2.56784194684364 2.37261673850113 2511749.816668639 2.92739120428626 116.338523656302 11.299957716744 81.2969502944629 1775821.65901301 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 15:32:37 2020-Feb-22 15:32
2174-Dec-11 03:10 00:03 Jupiter 1.59981442315524 1.59981378253697 1.59981506377598 1.54616746695768 1.15400731103828 2515441.631612890 3.12778327839676 165.154006827181 61.7123179305311 79.2325735925366 2780508.89091147 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 15:32:37 2020-Feb-22 15:32
2185-Jan-30 19:47 00:03 Jupiter 1.95969702411214 1.95969517622278 1.95969887200095 2.62563145072675 2.45550365512935 2519145.324234392 3.19678528176954 88.9791003425634 21.9167837938369 56.8179949270105 1509676.37456325 T 28 CATAB v2.0f-lin.ifort 2020-Feb-22 15:32:37 2020-Feb-22 15:32

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