+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .03776420974452394 3.8217e-08   a 3.057822917626162 1.628e-08 au q 2.942346651603316 1.1737e-07 au i 10.86086288470149 3.6835e-06 deg node 138.6621137650445 2.2017e-05 deg peri 285.2421892004896 6.1121e-05 deg M 219.362936182644 5.9743e-05 deg tp 2459963.481861888417 (2023-Jan-18.98186189) 0.00032704 TDB period 1953.066018475371 5.35 1.5598e-05 4.27e-08 d yr n .1843255663631013 1.4721e-09 deg/d Q 3.173299183649009 1.6895e-08 au   Orbit Determination Parameters    # obs. used (total)      2013      data-arc span      10482 days (28.70 yr)      first obs. used      1992-02-04      last obs. used      2020-10-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51005      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 22:34:37   Additional Information  Earth MOID = 1.97979 au   Jupiter MOID = 1.95506 au   T_jup = 3.206  [ 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 12.93   n/a MPCxxxxx   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-May-07 17:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin