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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3178472833376134 7.8014e-09  
a 2.758759077360079 7.6955e-09 au
q 1.881894999238197 2.0549e-08 au
i 13.59753335416428 3.7249e-07 deg
node 255.4193710091672 1.5585e-06 deg
peri 114.1605854070618 3.7494e-06 deg
M 64.877790727307 2.5303e-06 deg
tp 2458898.878259747625
(2020-Feb-19.37825975)
1.091e-05 TDB
period 1673.667140535847
4.58
7.003e-06
1.917e-08
d
yr
n .2150965334031361 9.0001e-10 deg/d
Q 3.63562315548196 1.0141e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2650  
   data-arc span      35675 days (97.67 yr)  
   first obs. used      1923-07-12  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40692  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:25:25  

Additional Information
 Earth MOID = .928039 au 
 Jupiter MOID = 2.08537 au 
 T_jup = 3.228 
[ 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. 2020-October); 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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