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3682 Welther (A923 NB)
Classification: Main-belt Asteroid          SPK-ID: 2003682
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3177142777796305 3.4496e-08  
a 2.758100968699761 9.7252e-09 au
q 1.881812911386017 9.3516e-08 au
i 13.59872567376173 4.7274e-06 deg
node 255.4203002867674 1.7284e-05 deg
peri 114.1375331271583 1.8795e-05 deg
M 21.87965359284474 8.6745e-06 deg
tp 2458898.816237146214
(2020-Feb-19.31623715)
3.9962e-05 TDB
period 1673.068290228064
4.58
8.849e-06
2.423e-08
d
yr
n .2151735240591564 1.1381e-09 deg/d
Q 3.634389026013505 1.2815e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2283  
   data-arc span      35541 days (97.31 yr)  
   first obs. used      1923-07-12  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43188  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:58:12  

Additional Information
 Earth MOID = .929229 au 
 Jupiter MOID = 2.08545 au 
 T_jup = 3.229 
[ 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 11.8   n/a MPO502188  
diameter diameter 19.087 km 0.229 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.5973 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2001) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Stephens, R.D.; Warner, B.D.; Pravec, P.; Kusnirak, P.; et al. (2002) Minor Planet Bull. 29, 41-46.]
[Szekely, P.; Kiss, L.L.; Szabo, Gy.M.; Sarneczky, K.; et al. (2005) Planet. Space Sci. 53, 925-936.]
[Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Klinglesmith III, D.A.; Hendrickx, S.; Madden, K.; Montgomery, S. (2016) Minor Planet Bull. 43, 123-128.]
[Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.138   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

3682 Welther (A923 NB)          Discovered 1923-Jul-12 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A923 NB = 1951 YO = 1978 NP3 = 1984 AA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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