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29456 Evakrchova (1997 SN2)
Classification: Main-belt Asteroid          SPK-ID: 2029456
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1576441392464159 4.2426e-08  
a 2.385646966084467 1.0073e-08 au
q 2.009563703570258 1.042e-07 au
i 1.590589837126203 4.7982e-06 deg
node 230.1002461095742 0.00016567 deg
peri 187.6403811856792 0.00016658 deg
M 357.848820812479 1.9424e-05 deg
tp 2459008.542327930967
(2020-Jun-08.04232793)
7.2649e-05 TDB
period 1345.884188515528
3.68
8.5241e-06
2.334e-08
d
yr
n .2674821526784336 1.6941e-09 deg/d
Q 2.761730228598676 1.1661e-08 au
  Orbit Determination Parameters
   # obs. used (total)      754  
   data-arc span      10962 days (30.01 yr)  
   first obs. used      1990-11-12  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59134  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 20:56:42  

Additional Information
 Earth MOID = 1.02169 au 
 Jupiter MOID = 2.56376 au 
 T_jup = 3.518 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456750.5 (2014-Apr-03.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1579937871303547 4.2619e-08  
q 2.008460451564233 1.0477e-07 au
tp 2456313.608111462607
(2013-Jan-21.10811146)
6.3267e-05 TDB
node 230.1462547940485 0.00016587 deg
peri 186.9600538781325 0.00016677 deg
i 1.588429256605531 4.8023e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      754  
   data-arc span      10962 days (30.01 yr)  
   first obs. used      1990-11-12  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59134  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 20:56:42  

Additional Information
 Jupiter MOID = 2.56376 au 
 T_jup = 3.518 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.816352193822815E-15 -4.451849170339445E-15 -1.03606152891284E-12 -2.506869554860845E-15 -2.567463177964433E-13 -5.663723672362766E-16
q -4.451849170339445E-15 1.097772474840534E-14 2.709490323726664E-12 5.299961038986294E-15 6.793377150645575E-13 1.56953098921257E-15
tp -1.03606152891284E-12 2.709490323726664E-12 4.002710437780545E-9 2.456958386272211E-12 1.106852342352022E-9 1.400548630110763E-12
node -2.506869554860845E-15 5.299961038986294E-15 2.456958386272211E-12 2.751428519508608E-8 -2.750306565761941E-8 -2.1808319364078E-10
peri -2.567463177964433E-13 6.793377150645575E-13 1.106852342352022E-9 -2.750306565761941E-8 2.781065045847188E-8 2.183888308222328E-10
i -5.663723672362766E-16 1.56953098921257E-15 1.400548630110763E-12 -2.1808319364078E-10 2.183888308222328E-10 2.306176617352139E-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 15.5   n/a MPO257069  
diameter diameter 4.495 km 0.088 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.050   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

29456 Evakrchová           Discovered 1997 Sept. 24 by L. Šarounová at Ondřejov.
Since 1980 Slovak amateur astronomer Eva Krchová (b. 1953) has been a spiritus agens of amateur astronomy in Spišská Nová Ves, together with her late husband Dušan. In spite of a debilitating and incurable illness, she maintains contacts with Slovak and Czech astronomers. The name was suggested by J. Grygar.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080520/MPCPages.arcLast Updated: 2008-05-22

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Alternate Designations
 1997 SN2 = 1990 VL15 = 1993 OK8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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