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1302 Werra (A924 SE)
Classification: Main-belt Asteroid          SPK-ID: 2001302
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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1749411495619093 3.0578e-08  
a 3.112933075508457 1.2185e-08 au
q 2.568352984769718 9.3895e-08 au
i 2.595750017747975 3.5121e-06 deg
node 90.13592261029099 9.1015e-05 deg
peri 354.3702710285855 9.1834e-05 deg
M 71.58145289380425 1.173e-05 deg
tp 2458601.611871665949
(2019-Apr-28.11187167)
6.515e-05 TDB
period 2006.102424510687
5.49
1.1779e-05
3.225e-08
d
yr
n .1794524524777484 1.0537e-09 deg/d
Q 3.657513166247197 1.4317e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3101  
   data-arc span      34986 days (95.79 yr)  
   first obs. used      1924-09-28  
   last obs. used      2020-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42972  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:20:25  

Additional Information
 Earth MOID = 1.58452 au 
 Jupiter MOID = 1.57543 au 
 T_jup = 3.193 
[ 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 10.9   n/a MPO296137  
diameter diameter 35.041 km 0.114 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.183 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.076   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1302 Werra (A924 SE)          Discovered 1924-Sep-28 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A924 SE = 1930 WD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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