+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   5027 Androgeos (1988 BX1) Classification: Jupiter Trojan          SPK-ID: 2005027 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06633914981274587 5.8981e-08   a 5.301590626857719 1.0406e-07 au q 4.949887612016755 3.6785e-07 au i 31.44516698868743 5.9454e-06 deg node 78.22003583465988 1.1097e-05 deg peri 344.7821954236001 4.9267e-05 deg M 300.514654280685 5.1447e-05 deg tp 2459937.241613230576 (2022-Dec-23.74161323) 0.00064399 TDB period 4458.694449125268 12.21 0.00013127 3.594e-07 d yr n .08074112368714273 2.3772e-09 deg/d Q 5.653293641698682 1.1096e-07 au   Orbit Determination Parameters    # obs. used (total)      1613      data-arc span      24807 days (67.92 yr)      first obs. used      1953-02-14      last obs. used      2021-01-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48265      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:21:59   Additional Information  Earth MOID = 3.96976 au   Jupiter MOID = .129389 au   T_jup = 2.700  [ 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 9.77   n/a E2021B10   diameter diameter 59.786 km 0.640 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)   rotation period rot_per 11.376 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.] [Stephens, R.D.; Coley, D.R.; French, L.M. (2016) Minor Planet Bull. 43, 15-22.] [Stephens, R.D.; Coley, D.R.; Warner, B.D.; French, L.M. (2016) Minor Planet Bull. 43, 323-331.] geometric albedo albedo 0.071   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)   5027 Androgeos (1988 BX1)          Discovered 1988-Jan-21 by Shoemaker, C. S. at Palomar Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Feb-25 17:16 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin