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421 Zahringia (A896 RE)
Classification: Main-belt Asteroid          SPK-ID: 2000421
[ 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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2835645324063836 3.5788e-08  
a 2.539855536261405 8.0706e-09 au
q 1.819642588741675 8.8879e-08 au
i 7.786190991681658 3.9099e-06 deg
node 187.391171456994 2.3403e-05 deg
peri 209.1178407793466 2.5148e-05 deg
M 181.0302857957448 1.34e-05 deg
tp 2459735.502799915637
(2022-Jun-05.00279992)		 5.7412e-05 TDB
period 1478.468070120761
4.05		 7.0469e-06
1.929e-08		 d
yr
n .2434952822285808 1.1606e-09 deg/d
Q 3.260068483781135 1.0359e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2976  
   data-arc span      42402 days (116.09 yr)  
   first obs. used      1904-08-04  
   last obs. used      2020-09-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44205  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:29:46  

Additional Information
 Earth MOID = .830558 au 
 Jupiter MOID = 2.18565 au 
 T_jup = 3.376 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456676.5 (2014-Jan-19.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2814157368565304 3.5796e-08  
q 1.826537360780464 8.8734e-08 au
tp 2456777.682759156586
(2014-Apr-30.18275916)		 4.9206e-05 TDB
node 187.4441627353211 2.3446e-05 deg
peri 209.2408815460669 2.5216e-05 deg
i 7.773429782368487 3.905e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      2976  
   data-arc span      42402 days (116.09 yr)  
   first obs. used      1904-08-04  
   last obs. used      2020-09-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44205  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:29:46  

Additional Information
 Jupiter MOID = 2.18565 au 
 T_jup = 3.376 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.281367434756911E-15 -3.170563803789484E-15 5.583821329722261E-13 -8.504048318831748E-15 6.857330320836503E-14 4.83915284590117E-16
q -3.170563803789484E-15 7.873752189881879E-15 -1.271369988979127E-12 2.069940917253998E-14 -1.500437804300445E-13 -1.579859374221178E-15
tp 5.583821329722261E-13 -1.271369988979127E-12 2.421254949252654E-9 -1.949346325069803E-11 4.645475538742021E-10 -4.672626509172563E-12
node -8.504048318831748E-15 2.069940917253998E-14 -1.949346325069803E-11 5.497248293600565E-10 -5.478000773128659E-10 -4.516116494063945E-12
peri 6.857330320836503E-14 -1.500437804300445E-13 4.645475538742021E-10 -5.478000773128659E-10 6.358574839927151E-10 3.588271800131539E-12
i 4.83915284590117E-16 -1.579859374221178E-15 -4.672626509172563E-12 -4.516116494063945E-12 3.588271800131539E-12 1.524940305856091E-11

[ 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 11.6   n/a MPO473767  
diameter diameter 14.119 km 0.320 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 6.42 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2010) Minor Planet Bull. 37, 127-130.]
geometric albedo albedo 0.172   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.848   0.034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=19.56 deg.
U-B UB 0.452   0.053 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=19.56 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

421 Zahringia (A896 RE)          Discovered 1896-Sep-07 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A896 RE = 1949 WJ = A908 OB 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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