+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   3880 Kaiserman (1984 WK) Classification: Inner Main-belt Asteroid          SPK-ID: 2003880 [ 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 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08249992352516547 4.1617e-08   a 1.946705905442468 5.2949e-09 au q 1.786102817117476 8.2382e-08 au i 17.5652929545911 4.3295e-06 deg node 276.493282886003 1.0713e-05 deg peri 59.27215997939627 2.4629e-05 deg M 166.1228110504866 2.1081e-05 deg tp 2458742.700075166536 (2019-Sep-16.20007517) 5.8135e-05 TDB period 992.0851441043824 2.72 4.0476e-06 1.108e-08 d yr n .3628720802235121 1.4805e-09 deg/d Q 2.107308993767459 5.7317e-09 au   Orbit Determination Parameters    # obs. used (total)      2298      data-arc span      15537 days (42.54 yr)      first obs. used      1978-07-09      last obs. used      2021-01-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .39713      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:13:58   Additional Information  Earth MOID = .811185 au   Jupiter MOID = 3.13301 au   T_jup = 3.835  [ 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 13.84   n/a E2021B10   diameter diameter 3.071 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 5.270 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Warner, B.D (2012) Minor Planet Bull. 39, 69-80.] [Warner, B.D. (2015) Minor Planet Bull. 42, 132-136.] [Warner, B.D.; Stephens, R.D. (2019) Minor Planet Bull. 46, 412-418.] geometric albedo albedo 0.566   0.125 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   3880 Kaiserman (1984 WK)          Discovered 1984-Nov-21 by Shoemaker, C. and Shoemaker, E. at Palomar Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1984 WK = 1978 NX  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-25 08:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin