+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   7959 Alysecherri (1994 PK) Classification: Inner Main-belt Asteroid          SPK-ID: 2007959 [ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08564059830948101 1.9778e-08   a 1.942670871454251 5.446e-09 au q 1.776299375704508 3.945e-08 au i 19.26417764447493 7.5727e-07 deg node 235.7786269808658 2.7782e-06 deg peri 100.5757757621351 1.6198e-05 deg M 246.0277696023407 1.9097e-05 deg tp 2459513.607749048944 (2021-Oct-26.10774905) 5.3019e-05 TDB period 989.0022268085299 2.71 4.1588e-06 1.139e-08 d yr n .3640032249085074 1.5306e-09 deg/d Q 2.109042367203994 5.9124e-09 au   Orbit Determination Parameters    # obs. used (total)      1430      data-arc span      25249 days (69.13 yr)      first obs. used      1951-12-01      last obs. used      2021-01-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .45439      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 20:11:24   Additional Information  Earth MOID = .858554 au   Jupiter MOID = 3.11309 au   T_jup = 3.828  [ 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 14.59   n/a E2021B10   rotation period rot_per 3.540 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Warner, B.D. (2017) Minor Planet Bull. 44, 12-19.] 7959 Alysecherri           Discovered 1994 Aug. 2 by C. W. Hergenrother at the Catalina Station. Alyse Cherri Hergenrother (b. 1984), maiden name Alyse Cherri Smith, is the wife of the discoverer. She has worked for the state of Arizona to prevent the abuse and neglect of Arizona's children. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20081113/MPCPages.arc Last Updated: 2008-11-17 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 14:31 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin