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30830 Jahn (1990 TQ12)
Classification: Main-belt Asteroid          SPK-ID: 2030830
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2141550774213151 3.047e-08  
a 2.360621436295804 6.8714e-09 au
q 1.85508236984346 7.2944e-08 au
i 4.67610466593766 3.4302e-06 deg
node 255.7264788493615 4.416e-05 deg
peri 175.6800616586462 4.518e-05 deg
M 95.75334296333391 8.0507e-06 deg
tp 2458848.137736603339
(2019-Dec-30.63773660)
2.9626e-05 TDB
period 1324.762257870953
3.63
5.7843e-06
1.584e-08
d
yr
n .2717468722112915 1.1865e-09 deg/d
Q 2.866160502748147 8.343e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1559  
   data-arc span      15096 days (41.33 yr)  
   first obs. used      1979-11-22  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4448  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:31:44  

Additional Information
 Earth MOID = .869237 au 
 Jupiter MOID = 2.4236 au 
 T_jup = 3.516 
[ 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 14.62   n/a E2021B10  
diameter diameter 4.037 km 0.175 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.207   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

30830 Jahn           Discovered 1990 Oct. 14 by F. Borngen and L. D. Schmadel at Tautenburg.
Friedrich Ludwig Jahn (1778-1852) was an educator, writer and the "father of gymnastics". He opened the first sports ground in Berlin in 1811 and founded the Turnverein (gym club) movement in Germany. He invented diverse apparatus that became standard equipment for sports activities.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020427/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1990 TQ12 = 1979 WV7 = 1990 VW1 = 1999 GT51 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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