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JPL Small-Body Database Browser
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1678 Hveen (1940 YH)
Classification: Main-belt Asteroid          SPK-ID: 2001678
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .11031190429275 3.582e-08  
a 3.158974537884581 1.4862e-08 au
q 2.810502040998223 1.1444e-07 au
i 10.19435604683126 4.9925e-06 deg
node 351.5854716212949 2.139e-05 deg
peri 121.397119025086 3.1961e-05 deg
M 327.0618575472561 2.2639e-05 deg
tp 2458788.135158172925
(2019-Oct-31.63515817)
0.00012914 TDB
period 2050.773113242933
5.61
1.4472e-05
3.962e-08
d
yr
n .1755435536360841 1.2388e-09 deg/d
Q 3.507447034770939 1.6501e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2220  
   data-arc span      36774 days (100.68 yr)  
   first obs. used      1919-04-02  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45091  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 21:04:16  

Additional Information
 Earth MOID = 1.84341 au 
 Jupiter MOID = 1.60653 au 
 T_jup = 3.172 
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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 10.9   n/a MPO319103  
diameter diameter 42.665 km 0.305 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.987 h n/a LCDB (Rev. 2019-January); 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:
[Carbognani, A. (2014). Minor Planet Bull. 41, 265-270.]
geometric albedo albedo 0.035   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1678 Hveen (1940 YH)          Discovered 1940-Dec-28 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1940 YH = 1951 YD1 = A919 GA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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