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1227 Geranium (1931 TD)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001227
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1923021053994405 3.9304e-08  
a 3.219331452439899 1.6054e-08 au
q 2.600247236157068 1.2786e-07 au
i 16.49001016351682 4.0324e-06 deg
node .664147806032124 1.3995e-05 deg
peri 302.9962706475772 1.6623e-05 deg
M 194.1231861939297 1.094e-05 deg
tp 2459972.642992008229
(2023-Jan-28.14299201)
6.577e-05 TDB
period 2109.827582847839
5.78
1.5782e-05
4.321e-08
d
yr
n .1706300566580294 1.2763e-09 deg/d
Q 3.83841566872273 1.9141e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2836  
   data-arc span      32534 days (89.07 yr)  
   first obs. used      1931-10-05  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40186  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 04:21:12  

Additional Information
 Earth MOID = 1.62847 au 
 Jupiter MOID = 1.73484 au 
 T_jup = 3.097 
[ 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 10.8   n/a MPO344305  
diameter diameter 46.269 km 0.140 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 12.363 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Albers, K.; Kragh, K.; Monnier, A.; Pligge, Z.; et al. (2010) Minor Planet Bull. 37, 152-158.]
geometric albedo albedo 0.071   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1227 Geranium (1931 TD)          Discovered 1931-Oct-05 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1931 TD = 1934 CL1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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