+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   18963 (2000 QB141) Classification: Main-belt Asteroid          SPK-ID: 2018963 [ 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 .1568341061227113 1.9299e-08   a 2.788200917988368 1.0798e-08 au q 2.350915919325139 5.7168e-08 au i 8.343213307271764 5.2637e-07 deg node 167.6349853059197 2.3581e-06 deg peri 30.76598198120176 6.8137e-06 deg M 287.6689408303042 8.8706e-06 deg tp 2459542.170001479384 (2021-Nov-23.67000148) 4.2884e-05 TDB period 1700.530891494417 4.66 9.8788e-06 2.705e-08 d yr n .2116985947156972 1.2298e-09 deg/d Q 3.225485916651597 1.2492e-08 au   Orbit Determination Parameters    # obs. used (total)      2301      data-arc span      13533 days (37.05 yr)      first obs. used      1984-02-26      last obs. used      2021-03-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .46809      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 02:43:13   Additional Information  Earth MOID = 1.35348 au   Jupiter MOID = 1.73794 au   T_jup = 3.297  [ 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 13.38   n/a E2021B10   diameter diameter 15.511 km 2.551 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   geometric albedo albedo 0.039   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   18963 (2000 QB141)          Discovered 2000-Aug-31 by LINEAR at Socorro Reference: 20001111/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  2000 QB141 = 1984 DX1 = 1995 SL54 = 1996 VR9 = 1999 NT46  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-23 15:50 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin