+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11177 (1998 FH77) Classification: Main-belt Asteroid          SPK-ID: 2011177 [ 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 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0386018210134557 3.8308e-08   a 3.055250060176153 1.6398e-08 au q 2.937311844201883 1.1746e-07 au i 10.85865826122128 3.6856e-06 deg node 138.6777869601751 2.2111e-05 deg peri 285.6413651831652 6.0005e-05 deg M 182.0639931560322 5.8377e-05 deg tp 2459964.617371799725 (2023-Jan-20.11737180) 0.00031991 TDB period 1950.60156740652 5.34 1.5704e-05 4.3e-08 d yr n .1845584490525395 1.4858e-09 deg/d Q 3.173188276150423 1.7031e-08 au   Orbit Determination Parameters    # obs. used (total)      1993      data-arc span      10482 days (28.70 yr)      first obs. used      1992-02-04      last obs. used      2020-10-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51097      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 03:01:18   Additional Information  Earth MOID = 1.97525 au   Jupiter MOID = 1.95752 au   T_jup = 3.207  [ 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 12.92   n/a E2021B10   diameter diameter 9.619 km 0.192 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.120   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11177 (1998 FH77)          Discovered 1998-Mar-24 by LINEAR at Socorro Reference: 19990728/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1998 FH77 = 1992 CT5 = 1992 CX4 = 1994 NX  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-28 17:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin