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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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1100144898745774 1.8799e-08  
a 3.157437939997731 1.2964e-08 au
q 2.810074015718245 5.8674e-08 au
i 10.1967493766437 3.7104e-07 deg
node 351.5737803973896 1.4822e-06 deg
peri 121.1670681547534 5.0971e-06 deg
M 72.63370339943927 6.4407e-06 deg
tp 2458787.037287842166
(2019-Oct-30.53728784)
3.5069e-05 TDB
period 2049.276980388272
5.61
1.2621e-05
3.455e-08
d
yr
n .1756717141924815 1.0819e-09 deg/d
Q 3.504801864277218 1.439e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2835  
   data-arc span      37243 days (101.97 yr)  
   first obs. used      1919-04-02  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41285  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:40:15  

Additional Information
 Earth MOID = 1.8427 au 
 Jupiter MOID = 1.60771 au 
 T_jup = 3.172 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456954.5 (2014-Oct-24.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1115120977607415 1.8812e-08  
q 2.806328193484005 5.8823e-08 au
tp 2456741.807965662563
(2014-Mar-25.30796566)
2.8621e-05 TDB
node 351.5959554736552 1.4826e-06 deg
peri 121.9479048847751 5.0021e-06 deg
i 10.19627563425874 3.7095e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2835  
   data-arc span      37243 days (101.97 yr)  
   first obs. used      1919-04-02  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41285  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 19:40:15  

Additional Information
 Jupiter MOID = 1.60771 au 
 T_jup = 3.172 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.538898195529737E-16 -1.086001554587302E-15 2.924790339738865E-13 -5.449159085322377E-15 2.631864920461458E-14 -8.484485206180754E-16
q -1.086001554587302E-15 3.460115898317789E-15 -8.287883027015981E-13 1.700533333842719E-14 -6.332485970902603E-14 2.572636223338105E-15
tp 2.924790339738865E-13 -8.287883027015981E-13 8.191352996848793E-10 -1.170719918583053E-11 1.315107449114772E-10 -5.659110289941788E-13
node -5.449159085322377E-15 1.700533333842719E-14 -1.170719918583053E-11 2.198160504274529E-12 -3.612939666493943E-12 4.193836705117447E-14
peri 2.631864920461458E-14 -6.332485970902603E-14 1.315107449114772E-10 -3.612939666493943E-12 2.502094993188563E-11 -4.863916443451165E-14
i -8.484485206180754E-16 2.572636223338105E-15 -5.659110289941788E-13 4.193836705117447E-14 -4.863916443451165E-14 1.376070850305557E-13

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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