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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1951342047982272 3.1929e-08  
a 3.079471137083241 1.6132e-08 au
q 2.478560985549411 9.6495e-08 au
i 4.014878352579588 3.6026e-06 deg
node 170.7513431920994 5.332e-05 deg
peri 116.4550748995963 5.4234e-05 deg
M 188.7641829402066 1.1903e-05 deg
tp 2460139.368446170282
(2023-Jul-13.86844617)
6.9334e-05 TDB
period 1973.843127126135
5.40
1.551e-05
4.246e-08
d
yr
n .1823853147459346 1.4332e-09 deg/d
Q 3.680381288617072 1.928e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1791  
   data-arc span      10815 days (29.61 yr)  
   first obs. used      1991-08-09  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48996  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 23:40:13  

Additional Information
 Earth MOID = 1.46363 au 
 Jupiter MOID = 1.52288 au 
 T_jup = 3.195 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457353.5 (2015-Nov-27.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1981148138996087 3.1894e-08  
q 2.466966828213182 9.6714e-08 au
tp 2458163.391171355966
(2018-Feb-13.89117136)
6.0465e-05 TDB
node 170.8093050732197 5.3344e-05 deg
peri 116.2754423564003 5.4232e-05 deg
i 4.01310429778453 3.6062e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1791  
   data-arc span      10815 days (29.61 yr)  
   first obs. used      1991-08-09  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48996  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 23:40:13  

Additional Information
 Jupiter MOID = 1.52288 au 
 T_jup = 3.195 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.017252131608248E-15 -3.058560712723501E-15 9.979175494140531E-14 4.656469926537269E-16 8.422768605825036E-15 3.437757409005498E-16
q -3.058560712723501E-15 9.353634512374189E-15 1.881272789245098E-14 -2.776759126477067E-15 1.512164971635755E-14 -1.134493936941284E-15
tp 9.979175494140531E-14 1.881272789245098E-14 3.656026808289743E-9 -6.456443374073417E-12 6.078468405436384E-10 3.181214402853652E-14
node 4.656469926537269E-16 -2.776759126477067E-15 -6.456443374073417E-12 2.845540209472832E-9 -2.839585425131441E-9 4.547663514465237E-12
peri 8.422768605825036E-15 1.512164971635755E-14 6.078468405436384E-10 -2.839585425131441E-9 2.94112715886631E-9 -4.533881131966526E-12
i 3.437757409005498E-16 -1.134493936941284E-15 3.181214402853652E-14 4.547663514465237E-12 -4.533881131966526E-12 1.30047009444328E-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 13.80   n/a MPCxxxxx  
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

[ show close-approach data ]
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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