+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   3177 Chillicothe (1934 AK) Classification: Main-belt Asteroid          SPK-ID: 2003177 [ 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 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .149333868684687 1.8496e-08   a 2.63248894338145 9.992e-09 au q 2.239369185196634 4.7795e-08 au i 15.96391517109232 7.7178e-07 deg node 35.03827571942799 2.1374e-06 deg peri 40.56985278496707 6.4428e-06 deg M 138.4589387666063 6.1711e-06 deg tp 2458600.478574514778 (2019-Apr-26.97857451) 2.5147e-05 TDB period 1560.084997753696 4.27 8.8823e-06 2.432e-08 d yr n .2307566578220736 1.3138e-09 deg/d Q 3.025608701566266 1.1484e-08 au   Orbit Determination Parameters    # obs. used (total)      2352      data-arc span      31826 days (87.13 yr)      first obs. used      1934-01-08      last obs. used      2021-02-26      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .3996      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 14:47:03   Additional Information  Earth MOID = 1.2736 au   Jupiter MOID = 2.41234 au   T_jup = 3.329  [ 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 MPO502183   diameter diameter 15.419 km 3.671 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)   rotation period rot_per 3.54722 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Mansego, E.A.; Rodriguez, P.B.; de Haro, J.L.; Chiner, O.R.; et al. (2016) Minor Planet Bull. 43, 332-336.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] geometric albedo albedo 0.058   0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   3177 Chillicothe           Discovered 1934 Jan. 8 by H. L. Giclas at the Lowell Observatory. Named for the southern Ohio city of Chillicothe, located at the confluence of the Scioto River and Paint Creek, on the occasion of the bicentennial of its founding by Nathanial Massie. The name is derived from the Shawnee Indian word meaning "principal town". This area was occupied by the Adena Mound Builders over 2000 years ago and at the time of its founding by the Shawnee Indians. Chillicothe served as the capital of the eastern section of the Northwest Territory and was the first capital of Ohio from 1803 to 1816. Name proposed by F. N. Bowman, who independently made the principal identification involving this planet and who lives 20 miles southwest of Chillicothe. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 19960828/MPCPages.arc Last Updated: 2003-09-26 [ show close-approach data ] Alternate Designations  1934 AK = 1937 VC = 1952 HC = 1967 UL = 1971 TG1 = 1984 US  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-20 12:43 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin