+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   175672 (1994 UN7) Classification: Main-belt Asteroid          SPK-ID: 2175672 [ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2672308936360948 5.2983e-08   a 3.188669707390406 2.6405e-08 au q 2.336558651974123 1.6454e-07 au i 4.317875471604399 6.2972e-06 deg node 249.5445806538853 7.9092e-05 deg peri 84.91491157413593 8.0329e-05 deg M 236.1166206014927 1.4947e-05 deg tp 2459916.187239527593 (2022-Dec-02.68723953) 9.2896e-05 TDB period 2079.757651760006 5.69 2.5833e-05 7.073e-08 d yr n .1730970912381777 2.1501e-09 deg/d Q 4.04078076280669 3.3461e-08 au   Orbit Determination Parameters    # obs. used (total)      265      data-arc span      9305 days (25.48 yr)      first obs. used      1994-10-28      last obs. used      2020-04-19      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .56919      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 21:06:21   Additional Information  Earth MOID = 1.32977 au   Jupiter MOID = 1.41191 au   T_jup = 3.136  [ 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 15.65   n/a E2021B55   diameter diameter 3.459 km 0.300 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   geometric albedo albedo 0.071   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   175672 (1994 UN7)          Discovered 1994-Oct-28 by Spacewatch at Kitt Peak Reference: 20080221/Numbers.arc Last Updated: 2008-02-22 [ show close-approach data ] Alternate Designations  1994 UN7 = 2005 MF42  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 07:07 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin