+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08245995301739639 4.2695e-08   a 1.946602309549481 5.5491e-09 au q 1.786085574560476 8.413e-08 au i 17.56618418026881 4.5365e-06 deg node 276.4941612988578 1.0847e-05 deg peri 59.20546538430038 2.8326e-05 deg M 93.62271501258314 2.4087e-05 deg tp 2458742.515859375692 (2019-Sep-16.01585938) 6.6562e-05 TDB period 992.0059529599024 2.72 4.2418e-06 1.161e-08 d yr n .3629010480490045 1.5518e-09 deg/d Q 2.107119044538487 6.0067e-09 au   Orbit Determination Parameters    # obs. used (total)      2026      data-arc span      15186 days (41.58 yr)      first obs. used      1978-07-09      last obs. used      2020-02-05      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .39256      source      ORB      producer      Otto Matic      solution date      2020-Feb-22 16:58:22   Additional Information  Earth MOID = .812973 au   Jupiter MOID = 3.13374 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 13.8   n/a MPO389620   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. 2019-August); 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. 46-4, submitted. (Binary Suspects) http://www.planetarysciences.org/lightcurves.html] 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 ] 2020-Sep-23 20:07 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin