+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1175 Margo (1930 UD) Classification: Outer Main-belt Asteroid          SPK-ID: 2001175 [ 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 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0687388473788947 3.3307e-08   a 3.213322461272256 1.5276e-08 au q 2.992442379027688 1.0853e-07 au i 16.30913521346631 4.0374e-06 deg node 237.1807642326996 1.3134e-05 deg peri 102.4156929152765 3.235e-05 deg M 232.6239732243368 3.0563e-05 deg tp 2459744.914953783127 (2022-Jun-14.41495378) 0.0001804 TDB period 2103.92324321682 5.76 1.5003e-05 4.108e-08 d yr n .1711089038826214 1.2202e-09 deg/d Q 3.434202543516824 1.6326e-08 au   Orbit Determination Parameters    # obs. used (total)      2947      data-arc span      41186 days (112.76 yr)      first obs. used      1907-12-04      last obs. used      2020-09-07      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .39882      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:21:44   Additional Information  Earth MOID = 2.04085 au   Jupiter MOID = 1.86417 au   T_jup = 3.124  [ 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 10.0   n/a MPO347524   diameter diameter 24.266 km 0.276 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 6.0136 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Brinsfield, J.W. (2010) Minor Planet Bull. 37, 19-20.] [Montgomery, K.A.; Davis, C.; Renshaw, T.; Rolen, J. (2013) Minor Planet Bull. 40, 212-213.] [Klinglesmith III, D.A.; Hanowell, J.; Warren, C.A. (2014) Minor Planet Bull. 41, 206-208.] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] geometric albedo albedo 0.249   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   1175 Margo (1930 UD)          Discovered 1930-Oct-17 by Reinmuth, K. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1930 UD = 1953 VK = 1957 KU = A907 VA  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-19 06:23 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin