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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1100144898836915 1.8799e-08  
a 3.157437939952136 1.2971e-08 au
q 2.810074015648889 5.8677e-08 au
i 10.19674937717815 3.7105e-07 deg
node 351.5737803958765 1.4822e-06 deg
peri 121.1670681434597 5.0972e-06 deg
M 72.63370341880623 6.4415e-06 deg
tp 2458787.037287740876
(2019-Oct-30.53728774)
3.5073e-05 TDB
period 2049.276980343884
5.61
1.2628e-05
3.457e-08
d
yr
n .1756717141962866 1.0825e-09 deg/d
Q 3.504801864255384 1.4398e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2827  
   data-arc span      37229 days (101.93 yr)  
   first obs. used      1919-04-02  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41339  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:47:23  

Additional Information
 Earth MOID = 1.8427 au 
 Jupiter MOID = 1.60771 au 
 T_jup = 3.172 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456950.5 (2014-Oct-20.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .111521290633247 1.8812e-08  
q 2.806343808842296 5.8827e-08 au
tp 2456741.836085269977
(2014-Mar-25.33608527)
2.8616e-05 TDB
node 351.5960638677365 1.4826e-06 deg
peri 121.9538980228665 5.0016e-06 deg
i 10.19618870406695 3.7095e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2827  
   data-arc span      37229 days (101.93 yr)  
   first obs. used      1919-04-02  
   last obs. used      2021-03-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41339  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:47:23  

Additional Information
 Jupiter MOID = 1.60771 au 
 T_jup = 3.172 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.53892474426331E-16 -1.086054331379727E-15 2.923674499069526E-13 -5.449489844811857E-15 2.629749925716591E-14 -8.483757145114899E-16
q -1.086054331379727E-15 3.460566122454738E-15 -8.284172969823229E-13 1.700668911160753E-14 -6.324714502613853E-14 2.572308354757292E-15
tp 2.923674499069526E-13 -8.284172969823229E-13 8.188899749803667E-10 -1.17050671918289E-11 1.31475394758463E-10 -5.656567341857552E-13
node -5.449489844811857E-15 1.700668911160753E-14 -1.17050671918289E-11 2.198215370132228E-12 -3.612586382892918E-12 4.19292464731208E-14
peri 2.629749925716591E-14 -6.324714502613853E-14 1.31475394758463E-10 -3.612586382892918E-12 2.501648494505329E-11 -4.859481333217573E-14
i -8.483757145114899E-16 2.572308354757292E-15 -5.656567341857552E-13 4.19292464731208E-14 -4.859481333217573E-14 1.376066811357739E-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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