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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1923021059570599 3.9343e-08  
a 3.219331452740965 1.6075e-08 au
q 2.600247234605076 1.2796e-07 au
i 16.49001031478963 4.034e-06 deg
node .6641475517267115 1.402e-05 deg
peri 302.9962707300605 1.6648e-05 deg
M 194.1231862502639 1.0941e-05 deg
tp 2459972.642991814444
(2023-Jan-28.14299181)
6.5773e-05 TDB
period 2109.8275831438
5.78
1.5803e-05
4.327e-08
d
yr
n .1706300566340939 1.278e-09 deg/d
Q 3.838415670876854 1.9166e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2805  
   data-arc span      32384 days (88.66 yr)  
   first obs. used      1931-10-05  
   last obs. used      2020-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40216  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:28:05  

Additional Information
 Earth MOID = 1.62847 au 
 Jupiter MOID = 1.73484 au 
 T_jup = 3.097 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456973.5 (2014-Nov-12.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1902142741961643 3.915e-08  
q 2.61320457609634 1.2634e-07 au
tp 2457859.111884901161
(2017-Apr-15.61188490)
6.4122e-05 TDB
node .7554265536397241 1.4053e-05 deg
peri 301.9359058063333 1.6682e-05 deg
i 16.45406965026967 4.0276e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2805  
   data-arc span      32384 days (88.66 yr)  
   first obs. used      1931-10-05  
   last obs. used      2020-06-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40216  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:28:05  

Additional Information
 Jupiter MOID = 1.73484 au 
 T_jup = 3.097 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.532702327684189E-15 -4.918992658607381E-15 5.27703809455714E-13 5.565033194312157E-15 5.973354601362703E-14 3.060369876485826E-15
q -4.918992658607381E-15 1.596157303313074E-14 -1.636650611444254E-12 -1.646384299545279E-14 -2.051914623496411E-13 -1.171645580450808E-14
tp 5.27703809455714E-13 -1.636650611444254E-12 4.111643482818447E-9 8.727982263249215E-12 6.035969942236657E-10 -6.052480709947008E-12
node 5.565033194312157E-15 -1.646384299545279E-14 8.727982263249215E-12 1.974811785632967E-10 -1.872995217180166E-10 -1.471934227294556E-11
peri 5.973354601362703E-14 -2.051914623496411E-13 6.035969942236657E-10 -1.872995217180166E-10 2.782929522250385E-10 1.332397041147379E-11
i 3.060369876485826E-15 -1.171645580450808E-14 -6.052480709947008E-12 -1.471934227294556E-11 1.332397041147379E-11 1.622154552445669E-11

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

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