+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1501 Baade (1938 UJ) Classification: Main-belt Asteroid          SPK-ID: 2001501 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 43 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2399407297780778 1.453e-08   a 2.545644920150755 4.888e-09 au q 1.934841020253926 3.7426e-08 au i 7.298691135515553 2.3613e-07 deg node 16.88297781170218 5.265e-06 deg peri 14.17387238559296 6.0667e-06 deg M 75.84500032101072 2.5964e-06 deg tp 2458887.949914221305 (2020-Feb-08.44991422) 1.0326e-05 TDB period 1483.52601231594 4.06 4.2729e-06 1.17e-08 d yr n .2426651080003661 6.9893e-10 deg/d Q 3.156448820047584 6.0608e-09 au   Orbit Determination Parameters    # obs. used (total)      3227      data-arc span      32982 days (90.30 yr)      first obs. used      1930-11-24      last obs. used      2021-03-13      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .40397      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 12:32:38   Additional Information  Earth MOID = .939936 au   Jupiter MOID = 2.30236 au   T_jup = 3.391  [ 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 11.99   n/a E2021B10   diameter diameter 10.798 km 0.388 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 15.132 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Ivarsen, K.; Willis, S.; Ingleby, L.; Matthews, D.; Simet, M. (2004) Minor Planet Bull. 31, 29-33.] [Collaborative Asteroid Lightcurve Link (CALL) (2011) http://www.minorplanetobserver.com/DATA/submissions_results.htm] geometric albedo albedo 0.263   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   1501 Baade (1938 UJ)          Discovered 1938-Oct-20 by Wachmann, A. at Bergedorf Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1938 UJ = 1930 UH1 = 1930 WJ = 1930 XH = 1934 VG = 1950 RD = 1970 QA  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 12:55 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin