+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   58550 (1997 GN19) Classification: Outer Main-belt Asteroid          SPK-ID: 2058550 [ 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 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1287735787390923 5.3873e-08   a 3.210201131207223 2.522e-08 au q 2.796812043069386 1.6746e-07 au i 22.46588513567889 6.1034e-06 deg node 198.0947207047928 9.8102e-06 deg peri 175.6986324936285 1.8661e-05 deg M 221.1845185152187 1.7463e-05 deg tp 2460010.587992783193 (2023-Mar-07.08799278) 0.00010707 TDB period 2100.858450964073 5.75 2.4757e-05 6.778e-08 d yr n .1713585224339117 2.0193e-09 deg/d Q 3.623590219345059 2.8467e-08 au   Orbit Determination Parameters    # obs. used (total)      852      data-arc span      8743 days (23.94 yr)      first obs. used      1997-04-05      last obs. used      2021-03-13      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .54719      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 11:30:52   Additional Information  Earth MOID = 1.79723 au   Jupiter MOID = 1.84201 au   T_jup = 3.060  [ 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 14.04   n/a E2021B10   diameter diameter 8.451 km 0.160 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.043   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   58550 (1997 GN19)          Discovered 1997-Apr-05 by LINEAR at Socorro Reference: 20030614/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1997 GN19 = 1999 RF199  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 01:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin