+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   3416 Dorrit (1931 VP) Classification: Mars-crossing Asteroid          SPK-ID: 2003416 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2069061540644735 3.9522e-08   a 1.917756768172225 5.4184e-09 au q 1.520961090838596 7.534e-08 au i 22.06680760655822 4.0385e-06 deg node 19.9304948943617 1.0034e-05 deg peri 293.7314701635116 1.8814e-05 deg M 187.8365130830464 2.1116e-05 deg tp 2459464.403086869542 (2021-Sep-06.90308687) 5.801e-05 TDB period 970.0379230445851 2.66 4.1111e-06 1.126e-08 d yr n .3711195113589941 1.5728e-09 deg/d Q 2.314552445505854 6.5395e-09 au   Orbit Determination Parameters    # obs. used (total)      2064      data-arc span      32365 days (88.61 yr)      first obs. used      1931-11-08      last obs. used      2020-06-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .36963      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 15:57:02   Additional Information  Earth MOID = .615463 au   Jupiter MOID = 3.17554 au   T_jup = 3.814  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.4   n/a MPO452211   rotation period rot_per 2.574 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Warner, B.D. (2010) Minor Planet Bull. 37, 161-165.] [Warner, B.D. (2015) Minor Planet Bull. 42, 167-172.] [Warner, B.D. (2017) Minor Planet Bull. 44, 116-120.] SMASSII spectral type spec_B Sa   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 3416 Dorrit (1931 VP)          Discovered 1931-Nov-08 by Reinmuth, K. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1931 VP = 1984 UB  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Nov-28 17:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin