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JPL Small-Body Database Browser
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241 Germania
Classification: Main-belt Asteroid          SPK-ID: 2000241
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 107 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1031750372664358 3.1389e-08  
a 3.048769825267038 8.1791e-09 au
q 2.734212884928326 9.6671e-08 au
i 5.50507887045996 3.8353e-06 deg
node 270.3453543864736 3.5878e-05 deg
peri 80.41153788924488 4.0334e-05 deg
M 177.2739288312472 1.8982e-05 deg
tp 2458043.024319029005
(2017-Oct-16.52431903)
0.00010218 TDB
period 1944.398972945881
5.32
7.8245e-06
2.142e-08
d
yr
n .1851471868731645 7.4506e-10 deg/d
Q 3.363326765605749 9.023e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2535  
   data-arc span      49379 days (135.19 yr)  
   first obs. used      1884-11-24  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48461  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:21:37  

Additional Information
 Earth MOID = 1.73514 au 
 Jupiter MOID = 2.05228 au 
 T_jup = 3.222 
[ 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 7.8   n/a MPO502155 IRAS observations used: 17
diameter diameter 168.90 km 3.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
rotation period rot_per 15.51 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Lagerkvist, C.-I.; Magnusson, P.; Debehogne, H.; Hoffmann, M.; et al. (1992) Astron. Astrophys. Suppl. Ser. 95, 461-470.]
[Lopez-Gonzalez, M.J.; Rodriguez, E. (2000) Astron. Astrophys. Suppl. Ser. 145, 255-261.]
[Riccioli, D.; Blanco, C.; Cigna, M. (2001) Planet. Space Sci. 49, 657-671.]
geometric albedo albedo 0.0575   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 17
B-V BV 0.689   0.015 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=3.04, mean=10.45, max.=18.30) deg.
U-B UB 0.289   0.034 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=3.04, mean=10.45, max.=18.30) deg.
Tholen spectral type spec_T CP   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B B   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

241 Germania          Discovered 1884-Sep-12 by Luther, R. at Dusseldorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1953 US = 1953 VK1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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