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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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1100144911159705 1.8799e-08  
a 3.157437938415301 1.2971e-08 au
q 2.810074010390283 5.8677e-08 au
i 10.19674937477064 3.7105e-07 deg
node 351.5737805907285 1.4822e-06 deg
peri 121.1670688178832 5.0972e-06 deg
M 72.63370267859786 6.4415e-06 deg
tp 2458787.037292256335
(2019-Oct-30.53729226)
3.5073e-05 TDB
period 2049.276978847701
5.61
1.2628e-05
3.457e-08
d
yr
n .175671714324545 1.0825e-09 deg/d
Q 3.50480186644032 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41345  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 12:58:33  

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 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1115212906401642 1.8812e-08  
q 2.806343810452541 5.8827e-08 au
tp 2456741.836086468107
(2014-Mar-25.33608647)
2.8616e-05 TDB
node 351.5960638218996 1.4826e-06 deg
peri 121.9538983558241 5.0016e-06 deg
i 10.19618869572655 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41345  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 12:58:33  

Additional Information
 Jupiter MOID = 1.60771 au 
 T_jup = 3.172 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.538926134742288E-16 -1.086054934243299E-15 2.923675110276898E-13 -5.449493502456183E-15 2.62974923433174E-14 -8.483760999588408E-16
q -1.086054934243299E-15 3.460568957946788E-15 -8.284174762287512E-13 1.700670589608999E-14 -6.3247090780913E-14 2.572309980140187E-15
tp 2.923675110276898E-13 -8.284174762287512E-13 8.188900390453329E-10 -1.17050684693874E-11 1.314754018950952E-10 -5.656569206099891E-13
node -5.449493502456183E-15 1.700670589608999E-14 -1.17050684693874E-11 2.198215468590119E-12 -3.612586104249795E-12 4.192925939037297E-14
peri 2.62974923433174E-14 -6.3247090780913E-14 1.314754018950952E-10 -3.612586104249795E-12 2.501648810026547E-11 -4.859480174256624E-14
i -8.483760999588408E-16 2.572309980140187E-15 -5.656569206099891E-13 4.192925939037297E-14 -4.859480174256624E-14 1.376066812545416E-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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1928-May-01 23:55 00:02 Jupiter 1.88768550486836 1.88768448579471 1.88768652394192 3.9567510915629 3.84167412700044 2425368.496309294 1.83291851563176 48.8734653610811 7.69065851357642 4.86905808115172 3688254.47080855 T 33 CATAB v2.0f-lin.ifort 2021-Mar-16 13:00:09 2021-Mar-16 13:00
1939-Jan-12 13:48 00:02 Jupiter 1.65642876063396 1.65642847335691 1.65642904791279 3.5410543270311 3.39357576712745 2429276.074759714 1.50577467084646 105.41020046124 6.20844399632171 84.9111212073349 10632533.6910947 T 33 CATAB v2.0f-lin.ifort 2021-Mar-16 13:00:09 2021-Mar-16 13:00
1949-Sep-28 00:22 00:01 Jupiter 1.74354050677936 1.74354002630875 1.74354098725026 2.90871339932694 2.73660401808842 2433187.515328144 1.33015267085221 51.9180870090278 8.70402825280994 56.3367292663061 10892475.3539871 T 33 CATAB v2.0f-lin.ifort 2021-Mar-16 13:00:09 2021-Mar-16 13:00
2046-Mar-19 07:02 < 00:01 Jupiter 1.69597831064825 1.69597816044571 1.69597846085118 3.63413373983979 3.49400457336683 2468423.792998472 0.621636551191207 59.3196083533528 4.74289382440471 85.0204205905884 16132296.4427853 T 33 CATAB v2.0f-lin.ifort 2021-Mar-16 13:00:09 2021-Mar-16 13:00
2056-Dec-07 02:59 < 00:01 Jupiter 1.67266876539466 1.67266841356475 1.67266911722477 3.20637242093704 3.04434629520952 2472339.624060906 0.870668039269355 35.7196794834554 5.85226266020857 60.0980993154033 11310628.6514147 T 33 CATAB v2.0f-lin.ifort 2021-Mar-16 13:00:09 2021-Mar-16 13:00
2067-Aug-01 03:42 00:01 Jupiter 1.93275735817082 1.93275671431888 1.93275800202276 2.66992049423476 2.50039679532346 2476228.654167765 1.22231628229138 34.3150945674545 7.43463927657314 21.7091716523938 7011280.66879495 T 33 CATAB v2.0f-lin.ifort 2021-Mar-16 13:00:09 2021-Mar-16 13:00
2153-May-24 13:08 00:03 Jupiter 1.76959218858145 1.76959091680125 1.76959346036406 3.62272459698145 3.48809766942411 2507571.047153872 2.82993284888108 124.175170982735 7.93409301078747 60.1560174577607 12572821.2209928 T 33 CATAB v2.0f-lin.ifort 2021-Mar-16 13:00:09 2021-Mar-16 13:00
2164-Feb-07 14:04 00:03 Jupiter 1.62914299770889 1.62914266722764 1.62914332819014 3.38772762789435 3.23061299700983 2511482.086203632 2.91153277099087 19.9665677980808 17.913556343892 -26.8530936467934 9403217.29529038 T 33 CATAB v2.0f-lin.ifort 2021-Mar-16 13:00:09 2021-Mar-16 13:00
2174-Oct-18 01:52 00:03 Jupiter 1.82988864840776 1.82988694213947 1.82989035467897 2.90782795436686 2.7440297764208 2515387.577632091 3.41351257063218 147.445868897284 6.81343836874963 50.3742370232286 9688822.16265951 T 33 CATAB v2.0f-lin.ifort 2021-Mar-16 13:00:09 2021-Mar-16 13:00

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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