+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15295 Tante Riek (1991 VA9) Classification: Main-belt Asteroid          SPK-ID: 2015295 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06146154151451608 4.8323e-08   a 2.350646734321 9.2041e-09 au q 2.206172362473568 1.135e-07 au i 7.609047593209301 4.7722e-06 deg node 59.6159909591982 3.9389e-05 deg peri 105.1727758324547 5.7005e-05 deg M 216.8720850501618 3.9037e-05 deg tp 2459523.860956150834 (2021-Nov-05.36095615) 0.00014234 TDB period 1316.374547063946 3.60 7.7315e-06 2.117e-08 d yr n .2734783962535187 1.6062e-09 deg/d Q 2.495121106168432 9.7698e-09 au   Orbit Determination Parameters    # obs. used (total)      1028      data-arc span      9734 days (26.65 yr)      first obs. used      1991-10-17      last obs. used      2018-06-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57511      source      ORB      producer      Otto Matic      solution date      2018-Oct-03 17:30:01   Additional Information  Earth MOID = 1.22605 au   Jupiter MOID = 2.4896 au   T_jup = 3.543  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.9   n/a MPO492922   diameter diameter 2.963 km 1.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.291   0.208 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   15295 Tante Riek           Discovered 1991 Nov. 4 by Spacewatch at Kitt Peak. Helena T. Kuipers-Rietberg ("Tante Riek", 1893-1944) was one of the founders of the Dutch resistance organization "Landelijke organisatie voor hulp aan Onderduikers", which helped to hide Jews and escaped prisoners of war during World War II. She was betrayed and died in the concentration camp Ravensbrück. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20100527/MPCPages.arc Last Updated: 2010-12-06 Alternate Designations  1991 VA9 = 1998 SM127 = 2000 FH11  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Oct-23 23:05 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin