+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   17725 (1997 YQ7) Classification: Main-belt Asteroid          SPK-ID: 2017725 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1659448715037871 3.2578e-08   a 2.689948808878342 1.1641e-08 au q 2.243565599437261 8.7472e-08 au i 11.48095562172354 5.3832e-06 deg node 336.3642783214561 1.7112e-05 deg peri 86.73658528408076 2.4846e-05 deg M 76.90486654434073 1.6343e-05 deg tp 2458656.256481661642 (2019-Jun-21.75648166) 7.3065e-05 TDB period 1611.441150221049 4.41 1.046e-05 2.864e-08 d yr n .2234025114417719 1.4502e-09 deg/d Q 3.136332018319424 1.3573e-08 au   Orbit Determination Parameters    # obs. used (total)      1788      data-arc span      16655 days (45.60 yr)      first obs. used      1974-09-22      last obs. used      2020-04-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .4251      source      ORB      producer      Otto Matic      solution date      2020-May-20 04:40:08   Additional Information  Earth MOID = 1.29118 au   Jupiter MOID = 2.27352 au   T_jup = 3.324  [ 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 13.3   n/a MPO502304   diameter diameter 6.427 km 1.160 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)   geometric albedo albedo 0.352   0.171 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   17725 (1997 YQ7)          Discovered 1997-Dec-27 by Kobayashi, T. at Oizumi Reference: 20001013/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1997 YQ7 = 1974 SS3 = 1979 YP2 = 1983 TX1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-23 12:23 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin