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8740 Vaclav (1998 AS8)
Classification: Main-belt Asteroid          SPK-ID: 2008740
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .006367322517393513 4.667e-08  
a 2.89061696282413 2.0352e-08 au
q 2.87221147234758 1.3953e-07 au
i 1.875144242991143 5.1748e-06 deg
node 180.1748345465222 0.00013972 deg
peri 209.2118115530446 0.0004343 deg
M 343.3169941094178 0.00041091 deg
tp 2457483.687112457550
(2016-Apr-05.18711246)
0.002049 JED
period 1795.081814460286
4.91
1.8958e-05
5.19e-08
d
yr
n .200547962271145 2.118e-09 deg/d
Q 2.909022453300679 2.0481e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1565  
   data-arc span      9140 days (25.02 yr)  
   first obs. used      1990-12-12  
   last obs. used      2015-12-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50604  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:08:14  

Additional Information
 Earth MOID = 1.86832 au 
 Jupiter MOID = 2.08419 au 
 T_jup = 3.290 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.2 mag n/a MPO350871  

8740 Vaclav (1998 AS8)          Discovered 1998-Jan-12 by Klet at Klet
Reference: 19980511/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 AS8 = 1991 UY2 = 1991 VO17 = 1993 BN13 = 1996 VN38 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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