+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   18801 Noelleoas (1999 JO76) Classification: Main-belt Asteroid          SPK-ID: 2018801 [ 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 .1426068399097243 2.907e-08   a 2.375400585167335 7.6693e-09 au q 2.036652214196911 6.8428e-08 au i 6.863848253425243 3.4986e-06 deg node 125.6560979586666 2.7045e-05 deg peri 163.8165272187257 2.9904e-05 deg M 283.950420199656 1.345e-05 deg tp 2459482.986718416618 (2021-Sep-25.48671842) 5.0583e-05 TDB period 1337.222623674804 3.66 6.4761e-06 1.773e-08 d yr n .2692147093732895 1.3038e-09 deg/d Q 2.714148956137759 8.763e-09 au   Orbit Determination Parameters    # obs. used (total)      2082      data-arc span      10454 days (28.62 yr)      first obs. used      1992-07-31      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .50832      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 02:38:22   Additional Information  Earth MOID = 1.01948 au   Jupiter MOID = 2.45455 au   T_jup = 3.518  [ 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 14.23   n/a E2021B10   diameter diameter 3.626 km 0.272 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 12.7612 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] geometric albedo albedo 0.337   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   18801 Noelleoas           Discovered 1999 May 10 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Noelle Joan Oas (b. 1984) was awarded third place in the 2003 Intel International Science and Engineering Fair for her environmental science team project. She attends the Winona Senior High School, Winona, Minnesota, U.S.A. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20040830/MPCPages.arc Last Updated: 2004-09-06 [ show close-approach data ] Alternate Designations  1999 JO76 = 1992 OB1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-20 08:33 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin