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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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1103119047741774 3.587e-08  
a 3.158974536847768 1.5078e-08 au
q 2.810502038554966 1.1474e-07 au
i 10.19435470261633 5.0679e-06 deg
node 351.5854677265346 2.154e-05 deg
peri 121.3971212992611 3.2231e-05 deg
M 327.0618594162462 2.3027e-05 deg
tp 2458788.135147433674
(2019-Oct-31.63514743)
0.00013139 TDB
period 2050.773112233301
5.61
1.4683e-05
4.02e-08
d
yr
n .1755435537225073 1.2568e-09 deg/d
Q 3.50744703514057 1.6741e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2209  
   data-arc span      36765 days (100.66 yr)  
   first obs. used      1919-04-02  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44914  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-03 20:25:34  

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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