+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   10648 Plancius (4089 P-L) Classification: Main-belt Asteroid          SPK-ID: 2010648 [ 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 33 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1797610166056266 4.1494e-08   a 2.726872383364009 1.1467e-08 au q 2.236687031576686 1.1056e-07 au i 8.628012801967303 3.9343e-06 deg node 204.2257621522523 2.2779e-05 deg peri 163.1227953978031 2.4479e-05 deg M 134.6961336114309 1.0176e-05 deg tp 2458585.113058656357 (2019-Apr-11.61305866) 4.4609e-05 TDB period 1644.733912873879 4.50 1.0374e-05 2.84e-08 d yr n .2188803898199947 1.3806e-09 deg/d Q 3.217057735151331 1.3528e-08 au   Orbit Determination Parameters    # obs. used (total)      1611      data-arc span      22087 days (60.47 yr)      first obs. used      1960-09-24      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .46927      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 22:14:48   Additional Information  Earth MOID = 1.23614 au   Jupiter MOID = 2.26096 au   T_jup = 3.316  [ 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 14.06   n/a E2021B10   10648 Plancius           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Petrus Plancius (Pieter Platevoet, 1552-1622) was a Dutch theologian, astronomer, navigator and appointed cartographer to the new Dutch East India Company. Plancius depicted the 12 new southern constellations on a globe he constructed in 1598. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20020921/MPCPages.arc Last Updated: 2003-10-02 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2131-Jun-27 12:18 00:02 Eunom 0.0433301725446493 0.0433226192927036 0.0433377279010089 5.31432382432099 5.31432376335952 2499569.012655058 1.53706491426852 608.073530016249 30.7497807032654 51.8384773134037 165777.532554297 T 33 CATAB v2.0f-lin.ifort 2021-Apr-12 22:14:58 2021-Apr-12 22:14 Alternate Designations  4089 P-L = 1987 QX3 = 1987 SM20  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-17 20:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin