+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   4102 Gergana (1988 TE3) Classification: Main-belt Asteroid          SPK-ID: 2004102 [ 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 .06870134716583821 3.2611e-08   a 3.017485621263225 1.4451e-08 au q 2.810180294028895 1.0428e-07 au i 9.593622579167835 4.1411e-06 deg node 184.78732964824 1.9468e-05 deg peri 284.5551972802206 3.8285e-05 deg M 322.7217140485055 3.171e-05 deg tp 2459398.752957799776 (2021-Jul-03.25295780) 0.00016841 TDB period 1914.547919418441 5.24 1.3754e-05 3.766e-08 d yr n .1880339459507249 1.3508e-09 deg/d Q 3.224790948497555 1.5444e-08 au   Orbit Determination Parameters    # obs. used (total)      2467      data-arc span      32079 days (87.83 yr)      first obs. used      1933-03-22      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44852      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 01:15:24   Additional Information  Earth MOID = 1.84589 au   Jupiter MOID = 1.87956 au   T_jup = 3.223  [ 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 12.26   n/a E2020-QM5   diameter diameter 12.040 km 0.835 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   geometric albedo albedo 0.176   0.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   4102 Gergana           Discovered 1988 Oct. 15 by V. Ivanova at Rozhen Observatory. Gergana Georgieva Gelkova (b. 2000) is the adorable grandniece of the discoverer. The name also honors the discoverer's parents, combining their first names Georgy and Ana. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20040306/MPCPages.arc Last Updated: 2004-03-08 [ show close-approach data ] Alternate Designations  1988 TE3 = 1933 FO = 1949 GD = 1970 GZ1 = 1980 FS9 = 1983 UE1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-03 02:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin