+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   3512 Eriepa (1984 AC1) Classification: Main-belt Asteroid          SPK-ID: 2003512 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2471199545642634 3.3387e-08   a 2.249190650307248 5.1933e-09 au q 1.693370758996954 7.3969e-08 au i 7.496737529041549 3.2522e-06 deg node 112.77410494139 2.7489e-05 deg peri 301.0555988031226 2.8283e-05 deg M 25.06628388931503 6.3937e-06 deg tp 2459114.712248646621 (2020-Sep-22.21224865) 2.1809e-05 TDB period 1232.076945413565 3.37 4.2672e-06 1.168e-08 d yr n .2921895433074277 1.012e-09 deg/d Q 2.805010541617541 6.4766e-09 au   Orbit Determination Parameters    # obs. used (total)      2132      data-arc span      15138 days (41.45 yr)      first obs. used      1979-08-14      last obs. used      2021-01-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44098      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:11:10   Additional Information  Earth MOID = .718932 au   Jupiter MOID = 2.58108 au   T_jup = 3.577  [ 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 13.92   n/a E2021B10   diameter diameter 4.880 km 0.889 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   rotation period rot_per 6.784 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Ditteon, R.; Hirsch, B.; Kirkpatrick, E.; Kramb, S.; et al. (2004) Minor Planet Bull. 31, 54-56.] [Skiff, B.A. (2011) Posting on CALL web site. http://www.minorplanet.info/call.html] [Szabo, R.; Pal, A.; Sarneczky, K.; Szabo, Gy.M.; et al. (2016) Astron. Astrophys. 596, A40.] geometric albedo albedo 0.136   0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   3512 Eriepa (1984 AC1)          Discovered 1984-Jan-08 by Wagner, J. at Flagstaff (AM) Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory. Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-05 16:46 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin