+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   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 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.DB Last 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 23:54 00:02 Jupiter 1.88768531394032 1.88768429534738 1.88768633253316 3.9567506673042 3.84167367886468 2425368.496059853 1.83204484584057 48.8501413854339 7.69041068153667 4.86657066393844 3689248.51420282 T 35 CATAB v2.0g-lin.ifort 2021-May-03 19:41:44 2021-May-03 19:41 1939-Jan-12 13:47 00:02 Jupiter 1.65642875194226 1.65642846474892 1.65642903913739 3.54105366500231 3.39357507636985 2429276.074502298 1.50503678736478 105.355875961642 6.20835953632663 84.9104632807284 10632615.8965926 T 35 CATAB v2.0g-lin.ifort 2021-May-03 19:41:44 2021-May-03 19:41 1949-Sep-28 00:22 00:01 Jupiter 1.74354061319752 1.74354013298198 1.74354109341335 2.90871265312227 2.73660323676956 2433187.515105262 1.32948639582742 51.8928938336402 8.70358766053466 56.339885202676 10893215.0291789 T 35 CATAB v2.0g-lin.ifort 2021-May-03 19:41:44 2021-May-03 19:41 2046-Mar-19 07:02 < 00:01 Jupiter 1.69597828684329 1.69597813671556 1.6959784369714 3.63413321733492 3.49400402868991 2468423.792951687 0.621360817918584 59.3027961253044 4.74185568307178 85.0227306224991 16135410.1887384 T 35 CATAB v2.0g-lin.ifort 2021-May-03 19:41:44 2021-May-03 19:41 2056-Dec-07 02:59 < 00:01 Jupiter 1.67266883337999 1.67266848162175 1.67266918513832 3.20637172319752 3.04434556801459 2472339.623961848 0.870271626348103 35.7063285039909 5.8519253494956 60.0951760590754 11311953.8686717 T 35 CATAB v2.0g-lin.ifort 2021-May-03 19:41:44 2021-May-03 19:41 2067-Aug-01 03:42 00:01 Jupiter 1.93275746930196 1.93275682568015 1.93275811292377 2.66992029387423 2.50039659242483 2476228.653988244 1.22175349137213 34.2994931833441 7.43413178783022 21.7043043796307 7011248.72589764 T 35 CATAB v2.0g-lin.ifort 2021-May-03 19:41:44 2021-May-03 19:41 2153-May-24 13:08 00:03 Jupiter 1.76959195098826 1.76959067970072 1.76959322227831 3.62272415342612 3.48809719108292 2507571.046881272 2.82888320471748 124.133209426801 7.93325534110246 60.1576609272783 12574148.0342079 T 35 CATAB v2.0g-lin.ifort 2021-May-03 19:41:44 2021-May-03 19:41 2164-Feb-07 14:04 00:03 Jupiter 1.62914306508284 1.62914273463862 1.62914339552706 3.38772680897553 3.23061214580906 2511482.085921991 2.91051954306986 19.960972713009 17.9133645238406 -26.8165862742007 9405973.73631122 T 35 CATAB v2.0g-lin.ifort 2021-May-03 19:41:44 2021-May-03 19:41 2174-Oct-18 01:51 00:03 Jupiter 1.82988890825496 1.82988720247333 1.8298906140395 2.90782714748232 2.74402894625694 2515387.577295281 3.4124069443254 147.397941551455 6.81307129047809 50.3730981532025 9689330.58366528 T 35 CATAB v2.0g-lin.ifort 2021-May-03 19:41:44 2021-May-03 19:41 Alternate Designations  1940 YH = 1951 YD1 = A919 GA  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-May-18 22:07 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin