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2016 Heinemann (1938 SE)
Classification: Main-belt Asteroid          SPK-ID: 2002016
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1920349130071837 3.482e-08  
a 3.127955925828484 1.4116e-08 au
q 2.527279181721706 1.1213e-07 au
i .9193234070859421 3.9666e-06 deg
node 16.95947930515699 0.00021078 deg
peri 340.7528297454904 0.00021102 deg
M 251.0456555351608 1.1824e-05 deg
tp 2459612.049218796257
(2022-Feb-01.54921880)
6.8439e-05 TDB
period 2020.641947303899
5.53
1.3678e-05
3.745e-08
d
yr
n .1781612029188747 1.206e-09 deg/d
Q 3.728632669935261 1.6826e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2835  
   data-arc span      41924 days (114.78 yr)  
   first obs. used      1905-10-25  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42867  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:44:10  

Additional Information
 Earth MOID = 1.52342 au 
 Jupiter MOID = 1.72124 au 
 T_jup = 3.185 
[ 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 11.9   n/a MPO473791  
diameter diameter 22.435 km 0.142 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 22.96 h n/a LCDB (Rev. 2019-August); 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:
[Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.058   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

2016 Heinemann (1938 SE)          Discovered 1938-Sep-18 by Bohrmann, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1938 SE = 1927 SM = 1930 DF = 1949 SB1 = 1971 OB1 = 1971 QP2 = 1972 VY = 1977 RZ7 = A905 UF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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