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22558 Mladen (1998 HH3)
Classification: Main-belt Asteroid          SPK-ID: 2022558
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04995038963618426 4.1732e-08  
a 2.201333923177554 6.9563e-09 au
q 2.091376435995485 9.4122e-08 au
i .772318076955159 4.006e-06 deg
node 72.93407848681024 0.00029006 deg
peri 76.82518468330201 0.00029327 deg
M 338.1399343791627 4.2589e-05 deg
tp 2459072.939638901612
0.00014119 TDB
period 1192.963939674637
n .3017693896918499 1.4304e-09 deg/d
Q 2.311291410359622 7.3037e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1012  
   data-arc span      9507 days (26.03 yr)  
   first obs. used      1994-01-17  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50711  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:43:47  

Additional Information
 Earth MOID = 1.10211 au 
 Jupiter MOID = 2.66525 au 
 T_jup = 3.663 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO452488  
diameter diameter 1.658 km 0.233 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 3.452 h n/a LCDB (Rev. 2019-August); 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. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.213   0.077 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2020-May-28 18:54 UT
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