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49448 Macocha (1998 YJ12)
Classification: Main-belt Asteroid          SPK-ID: 2049448
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2122380770484208 5.2887e-08  
a 2.542460931533881 9.2107e-09 au
q 2.002853912454393 1.3661e-07 au
i 9.332962358977584 5.8132e-06 deg
node 45.80645366861823 1.7865e-05 deg
peri 131.0206258006978 2.3336e-05 deg
M 75.06194662556442 1.139e-05 deg
tp 2458891.756956284455
(2020-Feb-12.25695628)
4.74e-05 TDB
period 1480.743582257988
4.05
8.0465e-06
2.203e-08
d
yr
n .2431210942349893 1.3211e-09 deg/d
Q 3.082067950613369 1.1166e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1779  
   data-arc span      7880 days (21.57 yr)  
   first obs. used      1998-12-17  
   last obs. used      2020-07-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47525  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:17:07  

Additional Information
 Earth MOID = 1.01914 au 
 Jupiter MOID = 1.9099 au 
 T_jup = 3.395 
[ show covariance matrix ]

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 14.66   n/a E2021B10  

49448 Macocha           Discovered 1998 Dec. 21 by P. Pravec at Ondřejov.
The Macocha chasm is a part of the cave system created by the lost river Punkva in the Moravian Karst. It is 168 meters deep and was formed in the early Pleistocene era. It is one of the most popular visitor sites in the Czech Republic.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030318/MPCPages.arcLast Updated: 2003-10-02

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