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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1100144792346527 3.3915e-08  
a 3.157437937157642 1.3383e-08 au
q 2.810074046785508 1.0676e-07 au
i 10.19675140780308 4.577e-06 deg
node 351.5737739760103 1.9093e-05 deg
peri 121.1670874015518 2.919e-05 deg
M 72.63369045294564 2.0224e-05 deg
tp 2458787.037362097112
(2019-Oct-30.53736210)
0.00011515 TDB
period 2049.27697762331
5.61
1.3029e-05
3.567e-08
d
yr
n .1756717144295044 1.1169e-09 deg/d
Q 3.504801827529775 1.4855e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2738  
   data-arc span      37188 days (101.82 yr)  
   first obs. used      1919-04-02  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41377  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:57:20  

Additional Information
 Earth MOID = 1.8427 au 
 Jupiter MOID = 1.60771 au 
 T_jup = 3.172 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456874.5 (2014-Aug-05.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1117125562167794 3.4091e-08  
q 2.806622184055906 1.08e-07 au
tp 2456742.398502931281
(2014-Mar-25.89850293)
0.00011362 TDB
node 351.6007668177967 1.9102e-05 deg
peri 122.0716418991861 2.8835e-05 deg
i 10.19408045852136 4.5754e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2738  
   data-arc span      37188 days (101.82 yr)  
   first obs. used      1919-04-02  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41377  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:57:20  

Additional Information
 Jupiter MOID = 1.60771 au 
 T_jup = 3.172 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.162212386175831E-15 -3.659750873915237E-15 1.235783296174626E-12 -4.95347943025089E-15 2.507910319640381E-13 -1.651985606246886E-15
q -3.659750873915237E-15 1.166455566495852E-14 -4.118996065599793E-12 1.502092788087082E-14 -8.323583977013479E-13 4.820157294141482E-15
tp 1.235783296174626E-12 -4.118996065599793E-12 1.291030585378264E-8 -2.564848262550201E-11 2.465964955389955E-9 2.305528755859321E-12
node -4.95347943025089E-15 1.502092788087082E-14 -2.564848262550201E-11 3.648850018021348E-10 -3.635006741546477E-10 -2.146733101373667E-12
peri 2.507910319640381E-13 -8.323583977013479E-13 2.465964955389955E-9 -3.635006741546477E-10 8.314836881570977E-10 2.509358165442982E-12
i -1.651985606246886E-15 4.820157294141482E-15 2.305528755859321E-12 -2.146733101373667E-12 2.509358165442982E-12 2.093454000156674E-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 11.02   n/a E2021B10  
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. 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:
[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

[ show close-approach data ]
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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