+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   7722 Firneis (2240 T-2) Classification: Main-belt Asteroid          SPK-ID: 2007722 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07758630589077974 1.8471e-08   a 2.350654874814824 8.3051e-09 au q 2.168276246653788 4.365e-08 au i 7.088008805986493 4.5016e-07 deg node 16.18430959650743 3.2916e-06 deg peri 175.0280028817005 9.8182e-06 deg M 210.6618716157734 9.8461e-06 deg tp 2459746.572034161062 (2022-Jun-16.07203416) 3.7618e-05 TDB period 1316.381385148967 3.60 6.9763e-06 1.91e-08 d yr n .2734769756405064 1.4493e-09 deg/d Q 2.533033502975859 8.9494e-09 au   Orbit Determination Parameters    # obs. used (total)      2244      data-arc span      17312 days (47.40 yr)      first obs. used      1973-09-19      last obs. used      2021-02-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46918      source      ORB      producer      Otto Matic      solution date      2021-Mar-16 20:04:12   Additional Information  Earth MOID = 1.16719 au   Jupiter MOID = 2.42106 au   T_jup = 3.544  [ 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 14.18   n/a E2021B10   7722 Firneis           Discovered 1973 Sept. 29 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Named in honor of Maria Gertrude Firneis (b. 1947), a professor of astronomy at the University of Vienna. She has worked on delicate astrometric and statistical problems and is an authority on the history of astronomy. She is also engaged in dating ancient events and correlating them with celestial phenomena. Name suggested and citation prepared by H. Haupt. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 19980211/MPCPages.arc Last Updated: 2009-11-17 [ show close-approach data ] Alternate Designations  2240 T-2 = 1997 GV17  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-10 15:43 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin