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100308 CAS (1995 HB)
Classification: Main-belt Asteroid          SPK-ID: 2100308
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07438808486112131 3.8957e-08  
a 2.222200837215484 8.1185e-09 au
q 2.056895572758244 8.5181e-08 au
i 6.049196006133299 5.5862e-06 deg
node 30.45654179870038 3.5375e-05 deg
peri 104.6060246025518 5.0771e-05 deg
M 276.5715461692385 3.6491e-05 deg
tp 2459280.904566075493
(2021-Mar-07.40456608)
0.00012297 TDB
period 1209.966613931867
3.31
6.6306e-06
1.815e-08
d
yr
n .2975288705116881 1.6305e-09 deg/d
Q 2.387506101672725 8.7224e-09 au
  Orbit Determination Parameters
   # obs. used (total)      822  
   data-arc span      9307 days (25.48 yr)  
   first obs. used      1995-04-21  
   last obs. used      2020-10-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55332  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:06:52  

Additional Information
 Earth MOID = 1.07998 au 
 Jupiter MOID = 2.62317 au 
 T_jup = 3.638 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.0   n/a MPO266351  

100308 ČAS           Discovered 1995 Apr. 21 by P. Pravec and L. Sarounova at Ondrejov.
The Česká Astronomická Společnost (Czech Astronomical Society) was established in Prague in 1917. During the last century, the Society's professional and amateur members have contributed considerably to the advancement of astronomy and dissemination of astronomical knowledge among Czech youth and public.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-06-09Last Updated: 2017-06-12

Alternate Designations
 1995 HB = 2000 WX117 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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