+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1169 Alwine (1930 QH) Classification: Main-belt Asteroid          SPK-ID: 2001169 [ 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 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1554430640761067 2.8428e-08   a 2.317566864629709 5.1208e-09 au q 1.957317169990411 6.4996e-08 au i 4.05393762510056 3.2259e-06 deg node 255.068100888144 4.6925e-05 deg peri 177.145054741828 4.8295e-05 deg M 131.1422025843213 1.1225e-05 deg tp 2458731.052739518410 (2019-Sep-04.55273952) 3.9902e-05 TDB period 1288.685186332058 3.53 4.2711e-06 1.169e-08 d yr n .2793544954331758 9.2588e-10 deg/d Q 2.677816559269006 5.9168e-09 au   Orbit Determination Parameters    # obs. used (total)      2897      data-arc span      32797 days (89.79 yr)      first obs. used      1930-08-30      last obs. used      2020-06-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .43217      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 15:27:23   Additional Information  Earth MOID = .97153 au   Jupiter MOID = 2.58309 au   T_jup = 3.560  [ 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 12.88   n/a E2021B10   diameter diameter 8.100 km 0.180 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 2.9272 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Bonamico, R. (2020) Minor Planet Bull. 47, 222-223.] [Polakis, T. (2020) Minor Planet Bull. 47, 177-186.] [Pravec, P.; Wolf, M.; Sarounova, L. (2020) http://www.asu.cas.cz/~ppravec/neo.htm] [Stephens, R.D.; Warner, B.D. (2020) Minor Planet Bull. 47, 224-230.] geometric albedo albedo 0.170   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   1169 Alwine (1930 QH)          Discovered 1930-Aug-30 by Wolf, M. and Ferrero, M. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1930 QH = 1937 VH = 1955 SK1 = 1955 SR1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-07 22:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin