+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   5574 Seagrave (1984 FS) Classification: Main-belt Asteroid          SPK-ID: 2005574 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 45 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1127763117185372 2.2071e-08   a 2.641280981677448 9.4983e-09 au q 2.343407054351549 5.9711e-08 au i 14.0050026932961 7.7466e-07 deg node 144.8809145014349 4.8422e-06 deg peri 346.946110833287 1.3546e-05 deg M 233.4097755237375 1.408e-05 deg tp 2459751.838096482639 (2022-Jun-21.33809648) 6.2606e-05 TDB period 1567.907123594432 4.29 8.4575e-06 2.316e-08 d yr n .2296054368161163 1.2385e-09 deg/d Q 2.939154909003348 1.0569e-08 au   Orbit Determination Parameters    # obs. used (total)      2765      data-arc span      20140 days (55.14 yr)      first obs. used      1965-11-28      last obs. used      2021-01-18      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .42418      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 17:42:22   Additional Information  Earth MOID = 1.35902 au   Jupiter MOID = 2.09367 au   T_jup = 3.344  [ 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 12.37   n/a E2021B10   diameter diameter 8.852 km 0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 4.6641 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm] geometric albedo albedo 0.297   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   5574 Seagrave           Discovered 1984 Mar. 20 by Z. Vavrova at Klet. Frank Evans Seagrave (1860-1934) was an American amateur astronomer, who observed the Sun, variable stars, novae, comets and minor planets from his private observatory. He was a prodigious computer of orbits of minor planets and comets, including the 1910 return of 1P/Halley. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: MPC batch dated 2014-09-09 Last Updated: 2014-11-10 [ show close-approach data ] Alternate Designations  1984 FS = 1928 DH = 1965 WM  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 04:16 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin