+ 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 ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .155418256838246 1.6767e-08   a 2.317532752316683 4.8109e-09 au q 1.957345851786081 3.887e-08 au i 4.053938860154878 8.6028e-07 deg node 255.0674670776253 1.6794e-05 deg peri 177.1033617494123 2.0919e-05 deg M 185.9534289674648 6.6023e-06 deg tp 2460019.517460608107 (2023-Mar-16.01746061) 2.4101e-05 TDB period 1288.656734162213 3.53 4.0127e-06 1.099e-08 d yr n .2793606632832634 8.6988e-10 deg/d Q 2.677719652847284 5.5586e-09 au   Orbit Determination Parameters    # obs. used (total)      3071      data-arc span      33174 days (90.83 yr)      first obs. used      1930-08-30      last obs. used      2021-06-27      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .42662      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 12:03:01   Additional Information  Earth MOID = .971849 au   Jupiter MOID = 2.58386 au   T_jup = 3.560  [ 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 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 Alternate Designations  1930 QH = 1937 VH = 1955 SK1 = 1955 SR1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jul-29 23:10 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin