+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2273 Yarilo (1975 EV1) Classification: Main-belt Asteroid          SPK-ID: 2002273 [ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1671745792210446 3.0304e-08   a 2.449878787787085 7.1565e-09 au q 2.040321332296216 7.4849e-08 au i .3895435546272771 3.1414e-06 deg node 66.16284964412243 0.00055963 deg peri 41.5210897021351 0.00055974 deg M 335.843090294505 1.0545e-05 deg tp 2459094.484059149710 (2020-Sep-01.98405915) 4.1107e-05 TDB period 1400.603873027656 3.83 6.1371e-06 1.68e-08 d yr n .2570319895102071 1.1263e-09 deg/d Q 2.859436243277954 8.3529e-09 au   Orbit Determination Parameters    # obs. used (total)      2296      data-arc span      22629 days (61.95 yr)      first obs. used      1958-12-03      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46915      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:05:18   Additional Information  Earth MOID = 1.05713 au   Jupiter MOID = 2.2625 au   T_jup = 3.477  [ 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 13.5   n/a MPO452193   diameter diameter 5.569 km 0.150 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.273   0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   2273 Yarilo (1975 EV1)          Discovered 1975-Mar-06 by Chernykh, L. at Nauchnyj Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1975 EV1 = 1958 XB = 1971 FO = 1977 TH8  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-19 06:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin