+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   7187 Isobe (1992 BW) Classification: Inner Main-belt Asteroid          SPK-ID: 2007187 [ 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 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0860852095600495 2.7955e-08   a 1.937976467934501 4.7105e-09 au q 1.771145357569915 5.5829e-08 au i 21.78666938427632 7.2582e-06 deg node 315.2991397257949 7.1685e-06 deg peri 86.19104320608818 5.0333e-05 deg M 257.6079333368954 4.9061e-05 deg tp 2459280.775401797240 (2021-Mar-07.27540180) 0.00013471 TDB period 985.4195538311543 2.70 3.5928e-06 9.837e-09 d yr n .3653266251926677 1.332e-09 deg/d Q 2.104807578299087 5.116e-09 au   Orbit Determination Parameters    # obs. used (total)      1701      data-arc span      12867 days (35.23 yr)      first obs. used      1985-08-20      last obs. used      2020-11-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .37007      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:30:07   Additional Information  Earth MOID = .865381 au   Jupiter MOID = 3.14493 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 14.0   n/a MPO473865   diameter diameter 5.421 km 1.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)   rotation period rot_per 4.2432 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Warner, B.D. (2011) Minor Planet Bull. 38, 142-149.] [Warner, B.D. (2013). Minor Planet Bull. 40, 36-42.] [Stephens, R.D. (2016) Minor Planet Bull. 43, 52-56.] geometric albedo albedo 0.163   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   7187 Isobe           Discovered 1992 Jan. 30 by E. F. Helin at Palomar. Syuzo Isobe (b. 1942), of the National Astronomical Observatory, has been instrumental in establishing the Bisei Spaceguard Center, an observatory designed for the observation of near-earth objects and earth-orbiting space debris. He is also president of the Japan Spaceguard Association. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20011101/MPCPages.arc Last Updated: 2009-05-11 Alternate Designations  1992 BW = 1985 QC3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-21 09:32 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin