+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   20325 Julianoey (1998 HO27) Classification: Main-belt Asteroid          SPK-ID: 2020325 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07741367592057233 2.9797e-08   a 2.378612915876906 7.6312e-09 au q 2.194475746466724 7.3036e-08 au i 6.100461388505185 3.2293e-06 deg node 98.16921362734729 3.1043e-05 deg peri 256.9690118741109 3.8845e-05 deg M 247.8737260830626 2.4914e-05 deg tp 2459417.839004299666 (2021-Jul-22.33900430) 9.3297e-05 TDB period 1339.936094364272 3.67 6.4483e-06 1.765e-08 d yr n .2686695294754342 1.2929e-09 deg/d Q 2.562750085287089 8.2219e-09 au   Orbit Determination Parameters    # obs. used (total)      2741      data-arc span      24174 days (66.18 yr)      first obs. used      1954-05-28      last obs. used      2020-08-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44566      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 01:34:29   Additional Information  Earth MOID = 1.19862 au   Jupiter MOID = 2.74291 au   T_jup = 3.528  [ 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 13.2   n/a MPO337430   diameter diameter 4.942 km 0.216 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 3.24474 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Pray, D.P.; Pravec, P.; Benishek, V.; Pollock, J.; et al. (2014) CBET 4039.] geometric albedo albedo 0.416   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   20325 Julianoey           Discovered 1998 Apr. 21 by Spacewatch at Kitt Peak. Julian Oey (b. 1964) is a prolific asteroid photometrist, observing from Australia. He is the principal discoverer of four binary asteroids and co-discoverer of several others, using the photometry technique. He has written or co-authored a number of papers on binary and other asteroids. Name suggested by P. Pravec and A. Harris. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: MPC batch dated 2016-06-20 Last Updated: 2016-06-21 Alternate Designations  1998 HO27 = 1977 TT6 = 2004 BB159  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Oct-23 11:01 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin