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1101 Clematis (1928 SJ)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001101
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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07931455859892464 3.3272e-08  
a 3.232769422123674 1.4458e-08 au
q 2.976363742355834 1.1221e-07 au
i 21.42437347336266 3.6931e-06 deg
node 201.8230098882387 9.7962e-06 deg
peri 106.1997535922616 2.6662e-05 deg
M 29.49295982068968 2.4044e-05 deg
tp 2459222.569246004567
(2021-Jan-08.06924600)
0.00014166 TDB
period 2123.051461061922
5.81
1.4242e-05
3.899e-08
d
yr
n .1695672510076288 1.1375e-09 deg/d
Q 3.489175101891514 1.5605e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2954  
   data-arc span      33882 days (92.76 yr)  
   first obs. used      1928-09-22  
   last obs. used      2021-06-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .4239  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:57:06  

Additional Information
 Earth MOID = 2.04447 au 
 Jupiter MOID = 1.78589 au 
 T_jup = 3.072 
[ 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 10.64   n/a MPCxxxxx  
diameter diameter 33.765 km 0.809 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 34.3 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D.; Stephens, R.D. (2010) Minor Planet Bull. 37, 73-74.]
geometric albedo albedo 0.127   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1101 Clematis (1928 SJ)          Discovered 1928-Sep-22 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1928 SJ = 1928 WB = 1963 TG1 = 1969 TG1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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