+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2307 Garuda (1957 HJ) Classification: Main-belt Asteroid          SPK-ID: 2002307 [ 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 40 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05494033138346604 3.4602e-08   a 3.047145941236979 1.5195e-08 au q 2.879734733451636 1.0971e-07 au i 7.709653710811028 3.8576e-06 deg node 251.5240393256623 3.2157e-05 deg peri 340.9231153740501 5.5292e-05 deg M 281.3760604605034 4.6812e-05 deg tp 2459424.817173494935 (2021-Jul-29.31717349) 0.00025363 TDB period 1942.845694999051 5.32 1.4532e-05 3.979e-08 d yr n .1852952094582971 1.386e-09 deg/d Q 3.214557149022323 1.6029e-08 au   Orbit Determination Parameters    # obs. used (total)      2932      data-arc span      24100 days (65.98 yr)      first obs. used      1954-11-23      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .43015      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 19:42:55   Additional Information  Earth MOID = 1.86934 au   Jupiter MOID = 1.8048 au   T_jup = 3.222  [ 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 11.2   n/a MPO384770   diameter diameter 40.139 km 0.122 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 29.76 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Albers, K.; Kragh, K.; Monnier, A.; Pligge, Z.; et al. (2010) Minor Planet Bull. 37, 152-158.] [Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.048   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   2307 Garuda (1957 HJ)          Discovered 1957-Apr-18 by at La Plata Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1957 HJ = 1976 YY2 = 1977 AH = 1981 WE4  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-28 06:57 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin