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22558 Mladen (1998 HH3)
Classification: Main-belt Asteroid          SPK-ID: 2022558
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

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Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04952093927855578 6.2944e-08  
a 2.201134700577942 1.1447e-08 au
q 2.0921324427267 1.3608e-07 au
i .7728918677515922 4.7891e-06 deg
node 72.91318397301792 0.00047071 deg
peri 77.43894476778405 0.00047349 deg
M 275.0555478463518 5.3111e-05 deg
tp 2457881.949755997808
0.00017627 JED
period 1192.801996956071
n .3018103599077546 2.3543e-09 deg/d
Q 2.310136958429185 1.2013e-08 au
  Orbit Determination Parameters
   # obs. used (total)      732  
   data-arc span      7964 days (21.80 yr)  
   first obs. used      1994-01-17  
   last obs. used      2015-11-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52306  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 20:09:46  

Additional Information
 Earth MOID = 1.10169 au 
 Jupiter MOID = 2.66919 au 
 T_jup = 3.663 
[ 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 15.9 mag n/a MPO347695  
rotation period rot_per 3.4515 h n/a LCDB (Rev. 2016-February); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

22558 Mladen           Discovered 1998 Apr. 22 by P. Kolény and L. Kornoš at Modra.
Mladen Kolény, Sr. (1925-1995), father of the first discoverer, taught geography and biology at grammar school. Mladen Kolény, Jr. (1951-2007), brother of the first discoverer, gave lectures on physical geography at Comenius University.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080520/MPCPages.arcLast Updated: 2008-05-22

Alternate Designations
 1998 HH3 = 1999 RH225 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2016-Apr-30 20:42 UT
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