+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   854 Frostia (A916 GO) Classification: Main-belt Asteroid          SPK-ID: 2000854 [ 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 74 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1737437297372121 2.7702e-08   a 2.368829825768521 5.985e-09 au q 1.957260496726748 6.4643e-08 au i 6.086313282783925 3.9878e-06 deg node 190.5834555966645 2.8211e-05 deg peri 84.21195933332436 3.051e-05 deg M 147.2487922080156 1.2317e-05 deg tp 2458455.811180072316 (2018-Dec-03.31118007) 4.4943e-05 TDB period 1331.677986852051 3.65 5.0468e-06 1.382e-08 d yr n .2703356243433915 1.0245e-09 deg/d Q 2.780399154810295 7.0248e-09 au   Orbit Determination Parameters    # obs. used (total)      2889      data-arc span      28332 days (77.57 yr)      first obs. used      1942-07-11      last obs. used      2020-02-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41271      source      ORB      producer      Otto Matic      solution date      2020-Feb-22 15:38:54   Additional Information  Earth MOID = .952619 au   Jupiter MOID = 2.34967 au   T_jup = 3.518  [ 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 11.9   n/a MPO452170   diameter diameter 7.839 km 0.204 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 37.56 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Behrend, R.; Bernasconi, L.; Klotz, A.; Durkee, R. (2004) IAUC 8389. (854)] [Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R.; et al. (2006) Astron. Astrophys. 446, 1177-1184.] [Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Marchis, F.; Enriquez, J.E.; Emery, J.P.; Mueller, M.; et al. (2012) Icarus 221, 1130-1161.] geometric albedo albedo 0.415   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   854 Frostia (A916 GO)          Discovered 1916-Apr-03 by Belyavskij, S. at Simeis Discovered at Simeis during the First World War while Simeis was not in communication with the Rechen-Institut for long periods of time were given provisional designations containing the Greek letter SIGMA. These are here abbreviated S. Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A916 GO = 1931 MB = 1935 QE = 1950 VP  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-09 18:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin