+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   77185 Cherryh (2001 FE9) Classification: Main-belt Asteroid          SPK-ID: 2077185 [ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1741390728484898 5.1843e-08   a 2.597719354818799 1.3296e-08 au q 2.145354914850076 1.3373e-07 au i 3.144751448213724 6.3327e-06 deg node 12.62668553400102 8.5767e-05 deg peri 231.4086946800804 8.7232e-05 deg M 211.33885945829 1.4869e-05 deg tp 2459832.012180813469 (2022-Sep-09.51218081) 6.3587e-05 TDB period 1529.279166461545 4.19 1.1741e-05 3.215e-08 d yr n .2354050247300302 1.8073e-09 deg/d Q 3.050083794787521 1.5612e-08 au   Orbit Determination Parameters    # obs. used (total)      497      data-arc span      11043 days (30.23 yr)      first obs. used      1990-10-24      last obs. used      2021-01-17      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .56852      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 13:30:05   Additional Information  Earth MOID = 1.13261 au   Jupiter MOID = 1.97859 au   T_jup = 3.393  [ 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 15.9   n/a MPO449486   diameter diameter 3.985 km 0.166 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.049   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   77185 Cherryh           Discovered 2001 Mar. 20 by D. Wells and A. Cruz at Needville. C. J. Cherryh (b. 1942), of Spokane, Washington, is the visionary author of more than 40 novels and three-time winner of the prestigious Hugo Award. She has challenged us to be worthy of the stars by imagining how mankind might grow to live among them. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20040713/MPCPages.arc Last Updated: 2004-07-14 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2011-Oct-21 05:11 < 00:01 Jupiter 1.99571280114537 1.99571230790022 1.99571329439052 2.32662590980925 2.13643301688842 2455855.715874291 0.188804168443815 67.6468291992095 8.71806495487633 -82.3301725898081 1872568.05503971 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 13:30:07 2021-Apr-13 13:30 2083-Feb-14 05:46 00:02 Jupiter 1.98888256432009 1.98888194573311 1.98888318290764 2.24583460533323 2.04744130208915 2481904.740411929 1.49399574506803 102.62780733967 15.300125315739 -89.9292023043401 1707772.9294572 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 13:30:07 2021-Apr-13 13:30 2154-Jun-11 19:14 00:03 Jupiter 1.98363545134095 1.98363477333398 1.98363612934961 2.17187056022539 1.96545452072494 2507954.301228177 3.0208671767732 139.2222522087 21.2272813546597 83.707866806787 1669568.22816795 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 13:30:07 2021-Apr-13 13:30 Alternate Designations  2001 FE9 = 1998 TG27  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jun-18 10:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin