+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1727 Mette (1965 BA) Classification: Mars-crossing Asteroid          SPK-ID: 2001727 [ 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 40 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1019870410879883 3.2287e-08   a 1.854001012513639 3.5117e-09 au q 1.664916935073238 6.0614e-08 au i 22.89964916879522 4.0808e-06 deg node 133.0083985515082 7.4347e-06 deg peri 313.1728345131066 1.9895e-05 deg M 353.0551124246626 1.9938e-05 deg tp 2459018.287958039260 (2020-Jun-17.78795804) 5.1084e-05 TDB period 922.0689067558442 2.52 2.6197e-06 7.172e-09 d yr n .3904263524801025 1.1093e-09 deg/d Q 2.043085089954039 3.8698e-09 au   Orbit Determination Parameters    # obs. used (total)      2601      data-arc span      24008 days (65.73 yr)      first obs. used      1955-02-23      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .34802      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:02:21   Additional Information  Earth MOID = .716298 au   Jupiter MOID = 3.09206 au   T_jup = 3.901  [ show covariance matrix ] [ 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 12.6   n/a MPO365265   rotation period rot_per 2.98109 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Gandolfi, D.; Cigna, M.; Fulvio, D.; Blanco, C. (2009) Planet. Space Sci. 57, 1-9.] [Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Warner, B.D. (2011) Minor Planet Bull. 38, 190-195.] [Warner, B.D.; Stephens, R.D.; Harris, A.W. (2013) CBET 3402.] [Warner, B.D.; Stephens, R.D. (2013) Minor Planet Bull. 40, 129-130.] [Warner, B.D.; Stephens, R.D.; Harris, A.W. (2015) Minor Planet Bull. 42, 31-34.] [Aznar, A.M.; Carreno Garcerain, A.; Arce Masego, E.; Brines Rodriques, P.; et al. (2016) Minor Planet Bull. 43, 257-263.] [Warner, B.D. (2016) Minor Planet Bull. 43, 300-304.] [Stephens, R.D.; Warner, B.D. (2020) Minor Planet Bull. 47, 50-60.] Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a medium resolution spectrum published by Chapman and Gaffey (1979) 1727 Mette           Discovered 1965 Jan. 25 by A. D. Andrews at Bloemfontein. Named by the discoverer in honor of his wife "for her tolerance of my nocturnal working hours and for the many months spent away from home". NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: MPC 5183 Last Updated: 2006-03-21 [ show close-approach data ] Alternate Designations  1965 BA = 1955 DC  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-19 02:32 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin