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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 ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1923876098936093 3.881e-08  
a 3.21888003626018 1.5916e-08 au
q 2.59960739954983 1.2654e-07 au
i 16.49252088392963 4.0298e-06 deg
node .6575824266577877 1.3732e-05 deg
peri 303.0554061459768 1.6377e-05 deg
M 228.1832968378579 1.0981e-05 deg
tp 2459972.866730777417
(2023-Jan-28.36673078)
6.5725e-05 TDB
period 2109.38383687119
5.78
1.5645e-05
4.283e-08
d
yr
n .1706659516904146 1.2658e-09 deg/d
Q 3.83815267297053 1.8978e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2972  
   data-arc span      32613 days (89.29 yr)  
   first obs. used      1931-10-05  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39465  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:53:41  

Additional Information
 Earth MOID = 1.62591 au 
 Jupiter MOID = 1.73521 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 10.86   n/a E2021B10  
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. 2020-October); 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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