+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07734658820643518 1.6846e-08   a 2.379599647400071 7.3592e-09 au q 2.19554573337644 4.164e-08 au i 6.099758965695681 4.202e-07 deg node 98.17009373252151 8.2299e-06 deg peri 256.6403794183016 1.4486e-05 deg M 301.9104661366274 1.3993e-05 deg tp 2459416.846394284319 (2021-Jul-21.34639428) 5.2437e-05 TDB period 1340.769959103833 3.67 6.2197e-06 1.703e-08 d yr n .268502435899312 1.2456e-09 deg/d Q 2.563653561423703 7.9284e-09 au   Orbit Determination Parameters    # obs. used (total)      2798      data-arc span      24241 days (66.37 yr)      first obs. used      1954-05-28      last obs. used      2020-10-09      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .44668      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:17:11   Additional Information  Earth MOID = 1.19782 au   Jupiter MOID = 2.73995 au   T_jup = 3.527  [ 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 13.29   n/a E2021B10   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. 2020-October); 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 ] 2021-Apr-20 01:55 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin