+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   16853 Masafumi (1997 YV2) Classification: Main-belt Asteroid          SPK-ID: 2016853 [ 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 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1209833170886585 4.0966e-08   a 3.09921560005034 1.438e-08 au q 2.724262216383333 1.2965e-07 au i 2.191906539289842 3.7189e-06 deg node 105.3310353948618 0.00011329 deg peri 47.89989328391829 0.00011443 deg M 43.50201801777046 1.4906e-05 deg tp 2458959.685288781412 (2020-Apr-20.18528878) 8.2451e-05 TDB period 1992.856883174427 5.46 1.387e-05 3.797e-08 d yr n .1806451848296076 1.2573e-09 deg/d Q 3.474168983717347 1.612e-08 au   Orbit Determination Parameters    # obs. used (total)      2058      data-arc span      8800 days (24.09 yr)      first obs. used      1997-02-01      last obs. used      2021-03-07      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51223      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:44:17   Additional Information  Earth MOID = 1.7351 au   Jupiter MOID = 1.51681 au   T_jup = 3.210  [ 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 13.27   n/a E2021B10   diameter diameter 12.025 km 0.151 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.070   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   16853 Masafumi           Discovered 1997 Dec. 21 by N. Sato at Chichibu. Masafumi Kimura (1959-2009) was a Japanese aerospace engineer who calculated the spacecraft orbit and contributed much to the success of `KAGUYA' as leader of design of the high-gain antenna that allows communication between the moon and the earth. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20101128/MPCPages.arc Last Updated: 2010-12-06 [ show close-approach data ] Alternate Designations  1997 YV2 = 1999 JF27  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 09:18 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin