+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1530 Rantaseppa (1938 SG) Classification: Main-belt Asteroid          SPK-ID: 2001530 [ 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 33 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1983209223815275 3.5199e-08   a 2.248885520158846 4.4256e-09 au q 1.802884469470482 7.9231e-08 au i 4.421759259536599 3.0626e-06 deg node 285.7831185626236 4.8712e-05 deg peri 84.99590650770611 4.9404e-05 deg M 71.37643327114478 7.3496e-06 deg tp 2458756.268436028876 (2019-Sep-29.76843603) 2.5169e-05 TDB period 1231.826234516392 3.37 3.6362e-06 9.955e-09 d yr n .2922490120056048 8.6268e-10 deg/d Q 2.694886570847209 5.3033e-09 au   Orbit Determination Parameters    # obs. used (total)      2556      data-arc span      29810 days (81.62 yr)      first obs. used      1938-09-16      last obs. used      2020-04-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44865      source      ORB      producer      Otto Matic      solution date      2020-May-20 01:26:01   Additional Information  Earth MOID = .809167 au   Jupiter MOID = 2.7939 au   T_jup = 3.599  [ 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 13.3   n/a MPO502168   diameter diameter 5.044 km 0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 3.5258 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (2016) http://www.asu.cas.cz/~ppravec/neo.htm] [Aznar Macias, A. (2017) Minor Planet Bull. 44, 139-141.] geometric albedo albedo 0.400   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   1530 Rantaseppa (1938 SG)          Discovered 1938-Sep-16 by Vaisala, Y. at Turku Independent discovery Sept. 18 by E. Delporte, Uccle, was announced first. Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-26 08:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin