+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1894 Haffner (1971 UH) Classification: Main-belt Asteroid          SPK-ID: 2001894 [ 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 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07033101562672874 4.2317e-08   a 2.886015889517024 1.189e-08 au q 2.683039460892415 1.2224e-07 au i .9135178709770414 3.4231e-06 deg node 257.5655513016713 0.00027071 deg peri 117.1133953192239 0.0002718 deg M 344.5166376312962 2.4602e-05 deg tp 2459077.521022689850 (2020-Aug-16.02102269) 0.00012248 TDB period 1790.797599905784 4.90 1.1067e-05 3.03e-08 d yr n .2010277431793186 1.2423e-09 deg/d Q 3.088992318141633 1.2727e-08 au   Orbit Determination Parameters    # obs. used (total)      2546      data-arc span      32001 days (87.61 yr)      first obs. used      1932-12-23      last obs. used      2020-08-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44837      source      ORB      producer      Otto Matic      solution date      2020-Aug-24 22:42:47   Additional Information  Earth MOID = 1.68377 au   Jupiter MOID = 2.2754 au   T_jup = 3.289  [ 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 12.0   n/a MPO265967   diameter diameter 10.826 km 0.250 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.305   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   1894 Haffner (1971 UH)          Discovered 1971-Oct-26 by Kohoutek, L. at Bergedorf Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1971 UH = 1932 YG = 1961 TH = 1961 TP1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Oct-01 17:32 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin