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18395 Schmiedmayer (1992 SH2)
Classification: Main-belt Asteroid          SPK-ID: 2018395
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1127660477505858 1.6138e-08  
a 2.411641931340058 9.0516e-09 au
q 2.139690602153251 3.7932e-08 au
i 4.780223097167324 4.7366e-07 deg
node 32.53787801224789 8.2434e-06 deg
peri 301.3173280394985 1.3924e-05 deg
M 215.7298966680643 8.9364e-06 deg
tp 2459748.703127035630
(2022-Jun-18.20312704)
3.5281e-05 TDB
period 1367.941944830787
3.75
7.7015e-06
2.109e-08
d
yr
n .2631690631026973 1.4816e-09 deg/d
Q 2.683593260526866 1.0072e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2996  
   data-arc span      14388 days (39.39 yr)  
   first obs. used      1981-10-23  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41603  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:28:28  

Additional Information
 Earth MOID = 1.13271 au 
 Jupiter MOID = 2.64143 au 
 T_jup = 3.506 
[ 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 13.98   n/a E2021B10  
diameter diameter 4.531 km 0.255 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.47765 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:
[Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.]
[McNeill, A.; Mommert, M.; Trilling, D.E.; Llama, J.; Skiff, B. (2019) Ap. J. Suppl. Series 245, id.29.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.197   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18395 Schmiedmayer           Discovered 1992 Sept. 21 by L. D. Schmadel and F. Börngen at Tautenburg.
Jörg Schmiedmayer (b. 1960) is an Austrian physicist and a leading expert in the field of quantum optics. A professor at the Heidelberg University, he is also an enthusiastic amateur astronomer who uses a 0.46-m Dobsonian telescope for deep-sky observations. The name was suggested by the first discoverer.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041126/MPCPages.arcLast Updated: 2004-12-06

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Alternate Designations
 1992 SH2 = 1981 UV14 = 1981 WV5 = 2000 QE147 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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