+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   508 Princetonia (1903 LQ) Classification: Main-belt Asteroid          SPK-ID: 2000508 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 52 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0110329652512618 7.1262e-08   a 3.162615392738315 1.9246e-08 AU q 3.127722367007128 2.242e-07 AU i 13.35892580325289 7.517e-06 deg node 44.48842503929935 2.1586e-05 deg peri 181.8491308841186 0.00024236 deg M 188.1041341292369 0.00024147 deg tp 2457381.413990007416 (2015-Dec-24.91399001) 0.0013799 JED period 2054.319541740252 5.62 1.8752e-05 5.134e-08 d yr n .1752405079567307 1.5996e-09 deg/d Q 3.197508418469503 1.9459e-08 AU   Orbit Determination Parameters    # obs. used (total)      1061      data-arc span      38291 days (104.84 yr)      first obs. used      1908-04-07      last obs. used      2013-02-06      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .57533      data source      ORB      producer      Otto Matic      solution date      2013-Mar-29 14:58:38   Additional Information  Earth MOID = 2.11835 AU   T_jup = 3.162  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 8.24 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 24 diameter diameter 142.35 km 2.6 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 24 rotation period rot_per 52.8 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Published Reference List: [Piironen, J.; Bowell, E.; Erikson, A.; Magnusson, P. (1994) Astron. Astrophys. Suppl. Ser. 106, 587-595.] geometric albedo albedo 0.0441   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 24 B-V BV .732 mag .015 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=4; phase (min.=1.13, mean=5.20, max.=7.94) deg. U-B UB .325 mag .026 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=4; phase (min.=1.13, mean=5.20, max.=7.94) deg. Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices 508 Princetonia (1903 LQ)          Discovered 1903-Apr-20 by Dugan, R. S. at Heidelberg (024) Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1903 LQ = 1926 KA = A920 GF  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-26 02:49 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin