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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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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

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
5.7412e-05 TDB
period 1478.468070120761
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 
[ 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 11.6   n/a MPO473767  
diameter diameter 14.119 km 0.320 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 6.42 h n/a LCDB (Rev. 2019-August); 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] (  
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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