+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   74834 (1999 TN30) Classification: Main-belt Asteroid          SPK-ID: 2074834 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2848554342582726 1.0064e-07   a 2.539533819077381 1.0301e-08 au q 1.816133810230524 2.6178e-07 au i 5.152792919958852 3.7304e-06 deg node 205.1844782156847 6.0115e-05 deg peri 111.6492131069628 6.1315e-05 deg M 68.46861946816996 7.1434e-06 deg tp 2458719.362681325957 (2019-Aug-23.86268133) 2.9175e-05 TDB period 1478.187168206396 4.05 8.9941e-06 2.462e-08 d yr n .2435415539676326 1.4818e-09 deg/d Q 3.262933827924238 1.3236e-08 au   Orbit Determination Parameters    # obs. used (total)      814      data-arc span      10582 days (28.97 yr)      first obs. used      1991-11-02      last obs. used      2020-10-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55421      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 21:42:10   Additional Information  Earth MOID = .810773 au   Jupiter MOID = 2.0942 au   T_jup = 3.383  [ hide covariance matrix ] Orbital Elements at Epoch 2457035.5 (2015-Jan-13.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2853359147319036 1.0052e-07   q 1.814463789234088 2.6167e-07 au tp 2457242.607129139687 (2015-Aug-08.10712914) 3.0147e-05 TDB node 205.2029984166399 6.0083e-05 deg peri 111.8716234056052 6.1279e-05 deg i 5.154383166449913 3.7339e-06 deg   Orbit Determination Parameters    # obs. used (total)      814      data-arc span      10582 days (28.97 yr)      first obs. used      1991-11-02      last obs. used      2020-10-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55421      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 21:42:10   Additional Information  Jupiter MOID = 2.0942 au   T_jup = 3.383  Orbit Covariance (6×6)   e q tp node peri i e 1.010446449188382E-14 -2.630068369413617E-14 9.887207340237103E-13 1.60511534359692E-13 2.196253627082263E-13 -7.971506171191931E-14 q -2.630068369413617E-14 6.847376156567918E-14 -2.573247702742173E-12 -4.17316795514505E-13 -5.741851907655906E-13 2.076159185980982E-13 tp 9.887207340237103E-13 -2.573247702742173E-12 9.08866930399269E-10 -5.069291248896398E-12 3.858665506038274E-10 -6.815442495303229E-12 node 1.60511534359692E-13 -4.17316795514505E-13 -5.069291248896398E-12 3.609970611397831E-9 -3.59927836982049E-9 -1.32189465669896E-10 peri 2.196253627082263E-13 -5.741851907655906E-13 3.858665506038274E-10 -3.59927836982049E-9 3.755140638659611E-9 1.291998862796815E-10 i -7.971506171191931E-14 2.076159185980982E-13 -6.815442495303229E-12 -1.32189465669896E-10 1.291998862796815E-10 1.394179014755508E-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 16.1   n/a MPO290961   74834 (1999 TN30)          Discovered 1999-Oct-04 by LINEAR at Socorro Reference: 20040415/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-17 07:16 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin