+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70030 Margaretmiller (1999 CZ1) Classification: Inner Main-belt Asteroid          SPK-ID: 2070030 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08581369274415963 5.7007e-08   a 1.952751682299418 5.7802e-09 au q 1.785178849428935 1.1191e-07 au i 17.03094656869197 5.3082e-06 deg node 319.9706908771839 1.2272e-05 deg peri 177.0441178626681 2.4942e-05 deg M 284.7277496230623 2.3445e-05 deg tp 2459208.901747904376 (2020-Dec-25.40174790) 6.5183e-05 TDB period 996.7103264466995 2.73 4.4255e-06 1.212e-08 d yr n .3611881912404883 1.6037e-09 deg/d Q 2.120324515169901 6.2763e-09 au   Orbit Determination Parameters    # obs. used (total)      1116      data-arc span      8027 days (21.98 yr)      first obs. used      1998-11-25      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .4772      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 21:54:10   Additional Information  Earth MOID = .798697 au   Jupiter MOID = 2.90745 au   T_jup = 3.832  [ 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 15.1   n/a MPO493357   diameter diameter 1.435 km 0.276 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 4.3292 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Warner, B.D. (2010) Minor Planet Bull. 37, 112-118.] [Warner, B.D (2012) Minor Planet Bull. 39, 16-21.] [Warner, B.D. (2015) Minor Planet Bull. 42, 108-114.] geometric albedo albedo 0.857   0.182 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   70030 Margaretmiller           Discovered 1999 Feb. 7 by B. D. Warner at Palmer Divide Observatory. Margaret Joan Miller (b. 1956) is the wife of the discoverer. A graduate of Indiana University, she is an accomplished violist who, as a member of the DaVinci Quartet, was a prize winner in two major international competitions. She now devotes her time to teaching viola and violin to students of all ages. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20040306/MPCPages.arc Last Updated: 2004-03-08 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-19 05:31 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin