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20187 Janapittichova (1997 AN17)
Classification: Mars-crossing Asteroid          SPK-ID: 2020187
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.

Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2884756002160352 1.1803e-08  
a 2.338172913539971 8.5999e-09 au
q 1.663667078897652 2.9468e-08 au
i 22.23479330083211 4.6631e-07 deg
node 285.42724649972 1.1972e-06 deg
peri 88.30599977246702 3.3843e-06 deg
M 3.955050531250646 5.8655e-06 deg
tp 2459382.152940467511
2.1226e-05 TDB
period 1305.910352063855
n .2756697651037513 1.5209e-09 deg/d
Q 3.01267874818229 1.1081e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1620  
   data-arc span      13071 days (35.79 yr)  
   first obs. used      1985-10-13  
   last obs. used      2021-07-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42532  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 14:50:00  

Additional Information
 Earth MOID = .824452 au 
 Jupiter MOID = 2.88096 au 
 T_jup = 3.414 
[ 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 13.49   n/a E2021B10  
diameter diameter 5.235 km 1.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 23.9976 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.299   0.165 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

20187 Janapittichová           Discovered 1997 Jan. 14 by M. Tichy at Klet.
Slovak-born Jana Pittichová (b. 1972) is an astronomer at the University of Hawaii. She has studied cometary activity and contributed to the Deep Impact mission with CCD photometric imaging of comet 9P/Tempel. Also a keen sportswoman, she qualified for the Ironman World Championship at Kona in Oct. 2005.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20051215/MPCPages.arcLast Updated: 2006-03-22

Alternate Designations
 1997 AN17 = 1985 WB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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