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241 Germania (A884 RA)
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 110 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1031750376193924 3.1377e-08  
a 3.04876982456824 7.9218e-09 au
q 2.734212883225543 9.6577e-08 au
i 5.505077360148784 3.6554e-06 deg
node 270.3453576847112 3.5741e-05 deg
peri 80.41153581809866 3.9858e-05 deg
M 177.2739279762849 1.8536e-05 deg
tp 2458043.024323975939
(2017-Oct-16.52432398)
9.9544e-05 TDB
period 1944.398972277377
5.32
7.5784e-06
2.075e-08
d
yr
n .1851471869368199 7.2162e-10 deg/d
Q 3.363326765910936 8.7392e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2809  
   data-arc span      49542 days (135.64 yr)  
   first obs. used      1884-11-24  
   last obs. used      2020-07-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46441  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:31:50  

Additional Information
 Earth MOID = 1.73514 au 
 Jupiter MOID = 2.05228 au 
 T_jup = 3.222 
[ hide covariance matrix ]
Orbital Elements at Epoch 2454877.5 (2009-Feb-15.0) TDB
Reference: JPL 110 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09670131086923017 3.1026e-08  
q 2.757581569029198 9.4683e-08 au
tp 2454139.480265751009
(2007-Feb-07.98026575)
0.0001065 TDB
node 270.562038998159 3.5611e-05 deg
peri 78.79487193262167 4.0397e-05 deg
i 5.511366173250648 3.6585e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2809  
   data-arc span      49542 days (135.64 yr)  
   first obs. used      1884-11-24  
   last obs. used      2020-07-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46441  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:31:50  

Additional Information
 Jupiter MOID = 2.05228 au 
 T_jup = 3.222 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.626329837278619E-16 -2.929483899469902E-15 -1.020691217270502E-13 -3.048711480710472E-15 -3.252529919720985E-14 4.562907999635656E-16
q -2.929483899469902E-15 8.964828691241234E-15 3.336974412901508E-13 1.177223748173876E-14 1.027542207871648E-13 -1.2625911798883E-15
tp -1.020691217270502E-13 3.336974412901508E-13 1.134176569546025E-8 -1.069515047386704E-12 2.048109210445816E-9 -2.179921790813492E-12
node -3.048711480710472E-15 1.177223748173876E-14 -1.069515047386704E-12 1.268117013553292E-9 -1.261864080908064E-9 1.238101236708765E-11
peri -3.252529919720985E-14 1.027542207871648E-13 2.048109210445816E-9 -1.261864080908064E-9 1.63191002543357E-9 -1.264900521137984E-11
i 4.562907999635656E-16 -1.2625911798883E-15 -2.179921790813492E-12 1.238101236708765E-11 -1.264900521137984E-11 1.338435589062506E-11

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. 2020-October); 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 (A884 RA)          Discovered 1884-Sep-12 by Luther, R. at Dusseldorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 A884 RA = 1953 US = 1953 VK1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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