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553 Kundry (A904 YA)
Classification: Main-belt Asteroid          SPK-ID: 2000553
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 .1093208214635997 3.0251e-08  
a 2.231661398511861 5.6079e-09 au
q 1.987694341197939 6.9387e-08 au
i 5.386848840416536 3.1215e-06 deg
node 72.3631745210062 3.9521e-05 deg
peri 354.6174498740422 4.3445e-05 deg
M 244.9752706450996 1.8819e-05 deg
tp 2459389.571660337302
6.4025e-05 TDB
period 1217.701606489036
n .2956389299986043 1.1144e-09 deg/d
Q 2.475628455825783 6.2209e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2863  
   data-arc span      42312 days (115.84 yr)  
   first obs. used      1904-12-27  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37993  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:28:22  

Additional Information
 Earth MOID = 1.00165 au 
 Jupiter MOID = 2.76471 au 
 T_jup = 3.628 
[ 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 12.2   n/a MPO384749  
diameter diameter 9.010 km 0.099 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 12.605 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2005) Minor Planet Bull. 32, 66-68.]
[Behrend, R. (2009) Observatoire de Geneve web site,]
[Behrend, R. (2012) Observatoire de Geneve web site,]
[Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.]
geometric albedo albedo 0.287   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

553 Kundry (A904 YA)          Discovered 1904-Dec-27 by Wolf, M. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2036-Aug-15 00:14 < 00:01 Thisb 0.0458950427110498 0.0458934361827081 0.0458966492783318 4.50994520211406 4.50994516917299 2464920.509390845 0.690954372830915 106.474280952052 25.084484814685 -42.6969281404325 191473.970672875 T 34 CATAB v2.0f-lin.ifort 2020-Nov-13 04:28:30 2020-Nov-13 04:28

Alternate Designations
 A904 YA = 1932 CL = 1957 UB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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