+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   277996 (2006 UR74) Classification: Main-belt Asteroid          SPK-ID: 2277996 [ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2287060759850628 4.5184e-08   a 2.576484055844298 1.5959e-08 au q 1.987226497594069 1.1109e-07 au i 2.94139349675699 8.0645e-06 deg node 306.2796041293397 0.0001372 deg peri 147.4695234887461 0.00014043 deg M 109.7136599907918 2.5803e-05 deg tp 2458740.139749077306 (2019-Sep-13.63974908) 0.00010759 TDB period 1510.56568841181 4.14 1.4035e-05 3.843e-08 d yr n .2383213141684024 2.2143e-09 deg/d Q 3.165741614094527 1.9609e-08 au   Orbit Determination Parameters    # obs. used (total)      198      data-arc span      9202 days (25.19 yr)      first obs. used      1995-02-06      last obs. used      2020-04-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .62494      source      ORB      producer      Otto Matic      solution date      2020-May-21 16:30:25   Additional Information  Earth MOID = 1.00447 au   Jupiter MOID = 2.03273 au   T_jup = 3.388  [ hide covariance matrix ] Orbital Elements at Epoch 2457495.5 (2016-Apr-17.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2282349754735206 4.5547e-08   q 1.989890671842995 1.1246e-07 au tp 2457230.351075711420 (2015-Jul-26.85107571) 0.00010716 TDB node 306.3547469478615 0.0001371 deg peri 147.7635012877414 0.00014034 deg i 2.94122716270129 8.0695e-06 deg   Orbit Determination Parameters    # obs. used (total)      198      data-arc span      9202 days (25.19 yr)      first obs. used      1995-02-06      last obs. used      2020-04-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .62494      source      ORB      producer      Otto Matic      solution date      2020-May-21 16:30:25   Additional Information  Jupiter MOID = 2.03273 au   T_jup = 3.388  Orbit Covariance (6×6)   e q tp node peri i e 2.074544865159378E-15 -5.097367076666285E-15 1.762787725027491E-12 -3.471322942579636E-14 4.611108605468074E-13 -2.477190540691743E-15 q -5.097367076666285E-15 1.264735892819872E-14 -4.624455907939122E-12 7.856639683632155E-14 -1.20618351407715E-12 5.789279228027624E-15 tp 1.762787725027491E-12 -4.624455907939122E-12 1.148264856494316E-8 -5.551408630389543E-11 3.276648011715202E-9 -5.285582775214013E-12 node -3.471322942579636E-14 7.856639683632155E-14 -5.551408630389543E-11 1.879547624101966E-8 -1.878392391366587E-8 7.759979689081352E-10 peri 4.611108605468074E-13 -1.20618351407715E-12 3.276648011715202E-9 -1.878392391366587E-8 1.969414562933323E-8 -7.763506514204975E-10 i -2.477190540691743E-15 5.789279228027624E-15 -5.285582775214013E-12 7.759979689081352E-10 -7.763506514204975E-10 6.51174734567461E-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 17.57   n/a E2021B55   277996 (2006 UR74)          Discovered 2006-Oct-17 by Spacewatch at Kitt Peak Reference: 20110517/Numbers.arc Last Updated: 2011-05-20 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-07 23:42 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin