+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   7966 Richardbaum (1996 DA) Classification: Main-belt Asteroid          SPK-ID: 2007966 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 43 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1839767283717336 1.7814e-08   a 2.373170349066041 7.0139e-09 au q 1.936562232376066 4.08e-08 au i 3.257142910937799 6.081e-07 deg node 97.68685598113784 1.2395e-05 deg peri 161.141644081304 1.4428e-05 deg M 208.4275164667315 5.6039e-06 deg tp 2459762.724365540866 (2022-Jul-02.22436554) 2.212e-05 TDB period 1335.339811531735 3.66 5.9199e-06 1.621e-08 d yr n .2695942986879518 1.1952e-09 deg/d Q 2.809778465756017 8.3043e-09 au   Orbit Determination Parameters    # obs. used (total)      2215      data-arc span      12116 days (33.17 yr)      first obs. used      1988-01-11      last obs. used      2021-03-14      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .48631      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 20:11:47   Additional Information  Earth MOID = .919961 au   Jupiter MOID = 2.25058 au   T_jup = 3.518  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.13   n/a E2021B10   diameter diameter 3.800 km 0.201 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 4.680 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Kurtenkov, A.; Ovcharov, E.P. (2014) Minor Planet Bull. 41, 193.] [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] [Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.] geometric albedo albedo 0.337   0.076 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   7966 Richardbaum           Discovered 1996 Feb. 18 by T. Kobayashi at Oizumi. Richard Myer Baum (b. 1930) is a British planetary observer and writer on astronomical history. He has authored many papers in the Journal of the British Astronomical Association and directed the Mercury and Venus section for many years. He was awarded the Association's Lydia Brown Medal in 1988. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20031110/MPCPages.arc Last Updated: 2003-11-12 Alternate Designations  1996 DA = 1988 AN5 = 1993 NP2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-20 02:10 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin