+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   49481 Gisellarubini (1999 BJ12) Classification: Main-belt Asteroid          SPK-ID: 2049481 [ 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 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1230279149139345 4.0891e-08   a 3.100080319397112 1.8237e-08 au q 2.718683901635961 1.2954e-07 au i 1.166971964250798 4.7081e-06 deg node 40.53015401550378 0.00020503 deg peri 203.1448498805924 0.00020593 deg M 267.5733170196174 2.1146e-05 deg tp 2459712.361791617045 (2022-May-12.86179162) 0.00011894 TDB period 1993.6909887943 5.46 1.7592e-05 4.816e-08 d yr n .1805696078396345 1.5934e-09 deg/d Q 3.481476737158263 2.0481e-08 au   Orbit Determination Parameters    # obs. used (total)      1310      data-arc span      8091 days (22.15 yr)      first obs. used      1998-11-24      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5667      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 05:01:17   Additional Information  Earth MOID = 1.70419 au   Jupiter MOID = 1.53434 au   T_jup = 3.210  [ 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 14.33   n/a E2021B10   diameter diameter 6.997 km 0.193 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.083   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   49481 Gisellarubini           Discovered 1999 Jan. 24 by M. M. M. Santangelo at the Monte Agliale Astronomical Observatory. Gisella Rubini (b. 1959) lives in Lucca, Italy. She is the girlfriend of the discoverer, and sometimes she helps him at the telescope in the nearby Monte Agliale astronomical observatory. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20030318/MPCPages.arc Last Updated: 2003-10-02 [ show close-approach data ] Alternate Designations  1999 BJ12 = 2000 HS12  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-25 16:46 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin