+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   17722 (1997 YT1) Classification: Main-belt Asteroid          SPK-ID: 2017722 [ 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 37 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2284561161437858 1.6629e-08   a 2.465620517280367 7.8743e-09 au q 1.902334430018063 4.1057e-08 au i 12.0138103569849 7.3003e-07 deg node 250.905287458571 1.4402e-06 deg peri 105.1281948177115 5.7692e-06 deg M 62.60175256000579 6.0252e-06 deg tp 2458954.592502223898 (2020-Apr-15.09250222) 2.3059e-05 TDB period 1414.124933875312 3.87 6.7743e-06 1.855e-08 d yr n .2545743953566003 1.2195e-09 deg/d Q 3.028906604542672 9.6732e-09 au   Orbit Determination Parameters    # obs. used (total)      1948      data-arc span      24211 days (66.29 yr)      first obs. used      1954-11-23      last obs. used      2021-03-07      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .46798      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 02:10:53   Additional Information  Earth MOID = .939178 au   Jupiter MOID = 2.58786 au   T_jup = 3.421  [ 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 13.86   n/a E2021B10   diameter diameter 5.276 km 0.292 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 8.6387 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Odden, C.; French, J.; Little, J.; Brigden, R.; Briggs. J.W. (2013) Minor Planet Bull. 40, 102.] geometric albedo albedo 0.210   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   17722 (1997 YT1)          Discovered 1997-Dec-21 by Beijing Schmidt CCD Asteroid Program at Xinglong Reference: 20001013/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1997 YT1 = 2000 LY19  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 10:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin