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7897 Bohuska (1995 EL1)
Classification: Main-belt Asteroid          SPK-ID: 2007897
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1952457205437106 3.2225e-08  
a 3.079105060469516 1.6412e-08 au
q 2.47792297430836 9.71e-08 au
i 4.014631743054933 3.9541e-06 deg
node 170.762118536003 5.5512e-05 deg
peri 116.3985055666911 5.654e-05 deg
M 152.3484928054389 1.2092e-05 deg
tp 2458165.337762010932
(2018-Feb-15.83776201)
6.3723e-05 TDB
period 1973.491172374309
5.40
1.5778e-05
4.32e-08
d
yr
n .1824178415588673 1.4585e-09 deg/d
Q 3.680287146630672 1.9616e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1595  
   data-arc span      10397 days (28.47 yr)  
   first obs. used      1991-08-09  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .504  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:40:34  

Additional Information
 Earth MOID = 1.46492 au 
 Jupiter MOID = 1.52347 au 
 T_jup = 3.195 
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Orbital Elements at Epoch 2457054.5 (2015-Feb-01.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1991788224695279 3.2164e-08  
q 2.461464222952418 9.7103e-08 au
tp 2456194.254058715134
(2012-Sep-23.75405871)
5.8747e-05 TDB
node 170.8417427231833 5.5592e-05 deg
peri 116.3056837052498 5.6576e-05 deg
i 4.011732052011193 3.956e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1595  
   data-arc span      10397 days (28.47 yr)  
   first obs. used      1991-08-09  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .504  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:40:34  

Additional Information
 Jupiter MOID = 1.52347 au 
 T_jup = 3.195 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.034524089692736E-15 -3.096717557061153E-15 -5.130111751525378E-14 -1.96175604860768E-15 -3.217426904858848E-15 1.429126137612561E-16
q -3.096717557061153E-15 9.428908212069726E-15 2.223344420506916E-13 6.120951394983398E-15 3.483013495475211E-14 -4.19024026066088E-16
tp -5.130111751525378E-14 2.223344420506916E-13 3.451154079703519E-9 -6.188809010121865E-12 6.339525433995716E-10 -1.185993673757246E-13
node -1.96175604860768E-15 6.120951394983398E-15 -6.188809010121865E-12 3.090457555424943E-9 -3.083996189456223E-9 2.913793101443278E-11
peri -3.217426904858848E-15 3.483013495475211E-14 6.339525433995716E-10 -3.083996189456223E-9 3.200837201327345E-9 -2.910505694196342E-11
i 1.429126137612561E-16 -4.19024026066088E-16 -1.185993673757246E-13 2.913793101443278E-11 -2.910505694196342E-11 1.564977197200145E-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 13.8   n/a MPO452281  
diameter diameter 8.529 km 0.468 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.080   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7897 Bohuska (1995 EL1)          Discovered 1995-Mar-12 by Sarounova, L. at Ondrejov
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1995 EL1 = 1991 PH21 = 1991 RN31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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