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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .192449430036997 3.6177e-08  
a 3.218195860587208 1.5194e-08 au
q 2.598855901469777 1.1947e-07 au
i 16.49472614196707 4.008e-06 deg
node .6560891643129477 1.2023e-05 deg
peri 303.1232776753159 1.5021e-05 deg
M 261.5621697052309 1.102e-05 deg
tp 2459973.102693283345
(2023-Jan-28.60269328)
6.5574e-05 TDB
period 2108.711345632278
5.77
1.4933e-05
4.088e-08
d
yr
n .1707203789393267 1.209e-09 deg/d
Q 3.837535819704639 1.8118e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3369  
   data-arc span      32775 days (89.73 yr)  
   first obs. used      1931-10-05  
   last obs. used      2021-06-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3863  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 12:07:43  

Additional Information
 Earth MOID = 1.62639 au 
 Jupiter MOID = 1.73538 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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