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JPL Small-Body Database Browser
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256 Walpurga
Classification: Main-belt Asteroid          SPK-ID: 2000256
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06606621809183416 3.855e-08  
a 3.000546577520183 1.3312e-08 au
q 2.802311812935028 1.1493e-07 au
i 13.32499469566744 4.4038e-06 deg
node 182.933472277756 1.7163e-05 deg
peri 47.09822523085209 3.5321e-05 deg
M 181.3078925511064 3.0818e-05 deg
tp 2459542.827479707244
(2021-Nov-24.32747971)
0.00016343 TDB
period 1898.449223850756
5.20
1.2634e-05
3.459e-08
d
yr
n .1896284585740919 1.262e-09 deg/d
Q 3.198781342105338 1.4192e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2514  
   data-arc span      48779 days (133.55 yr)  
   first obs. used      1886-04-03  
   last obs. used      2019-10-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41855  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:51:22  

Additional Information
 Earth MOID = 1.81281 au 
 Jupiter MOID = 1.79761 au 
 T_jup = 3.209 
[ 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 9.9   n/a MPO319083  
diameter diameter 66.634 km 0.422 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 16.664 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Shipley, H.; Dillard, A.; Kendall, J.; Reichert, M.; et al. (2008) Minor Planet Bull. 35, 99-101.]
[Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
geometric albedo albedo 0.050   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

256 Walpurga          Discovered 1886-Apr-03 by Palisa, J. at Vienna
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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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
1904-May-20 19:12 00:02 Jupiter 1.80446338495674 1.80446295998503 1.80446380993101 4.36538969809383 4.25650314355734 2416621.299934039 2.06039457452938 218.146102547522 16.9155298488965 -87.3759860931158 3660845.81737533 T 36 CATAB v2.0f-lin.ifort 2019-Nov-07 01:51:36 2019-Nov-07 01:51
1941-Jun-19 12:21 00:02 Jupiter 1.98395222974613 1.98395135433653 1.98395310515619 3.46889684335181 3.34355670026773 2430165.014852775 1.51791214161332 77.3340488280547 34.3973821436151 63.1687010141475 3295915.57442195 T 36 CATAB v2.0f-lin.ifort 2019-Nov-07 01:51:36 2019-Nov-07 01:51
1987-Aug-19 19:24 < 00:01 Jupiter 1.79982230541951 1.79982193356703 1.79982267727199 4.29639484068894 4.18542465958146 2447027.308010145 0.491959113337388 63.504815345353 17.1799589668532 87.8980862647169 3613182.45758855 T 36 CATAB v2.0f-lin.ifort 2019-Nov-07 01:51:36 2019-Nov-07 01:51
2070-Nov-19 17:50 00:01 Jupiter 1.80553058347505 1.80553020671662 1.80553096023358 4.17355960240982 4.05959929709473 2477435.243022250 1.16107286047423 122.579091863468 17.3890268337491 88.1387940214871 3376103.47716941 T 36 CATAB v2.0f-lin.ifort 2019-Nov-07 01:51:36 2019-Nov-07 01:51
2117-Feb-08 22:34 00:02 Jupiter 1.96449113356557 1.96448995976165 1.96449230737419 4.57654666863724 4.48134429220457 2494317.440575835 2.05374142115997 173.533593346664 19.36592409412 -71.6589567367123 4244173.54076668 T 36 CATAB v2.0f-lin.ifort 2019-Nov-07 01:51:36 2019-Nov-07 01:51
2154-Feb-22 13:56 00:03 Jupiter 1.83341638603715 1.83341572432127 1.833417047762 4.01252566340684 3.89568729424949 2507845.080796035 2.82978966923821 255.939976690726 18.5679542864284 82.7521744295891 3180168.18937373 T 36 CATAB v2.0f-lin.ifort 2019-Nov-07 01:51:36 2019-Nov-07 01:51
2200-May-14 21:22 00:04 Jupiter 1.90484089215871 1.9048392309227 1.90484255341539 4.57111337678381 4.4727777433235 2524727.390405526 3.63508851359251 335.964302547737 18.1432071104574 -76.3875166127919 4135684.19605255 T 36 CATAB v2.0f-lin.ifort 2019-Nov-07 01:51:36 2019-Nov-07 01:51

Alternate Designations
 1951 VJ 
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