+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1153 Wallenbergia (A924 RJ) Classification: Main-belt Asteroid          SPK-ID: 2001153 [ 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 43 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1604109608047903 4.1773e-08   a 2.196082946230522 5.4336e-09 au q 1.843807170818669 9.2774e-08 au i 3.335764107990059 4.0075e-06 deg node 280.4983258310464 6.0475e-05 deg peri 28.87804455575349 6.1234e-05 deg M 180.2807184155301 1.0579e-05 deg tp 2459593.922090423028 (2022-Jan-14.42209042) 3.5769e-05 TDB period 1188.698010969296 3.25 4.4116e-06 1.208e-08 d yr n .3028523617251166 1.124e-09 deg/d Q 2.548358721642375 6.3052e-09 au   Orbit Determination Parameters    # obs. used (total)      2692      data-arc span      33074 days (90.55 yr)      first obs. used      1930-04-29      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45899      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:58:43   Additional Information  Earth MOID = .829981 au   Jupiter MOID = 2.68974 au   T_jup = 3.650  [ 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 12.1   n/a MPO347524   diameter diameter 8.037 km 0.357 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 4.096 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Sci. XXVI, 1511-1512.] [Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.] [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] geometric albedo albedo 0.433   0.091 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   1153 Wallenbergia (A924 RJ)          Discovered 1924-Sep-05 by Belyavskij, S. at Simeis Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  A924 RJ = 1930 HH  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-28 06:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin