+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   6790 Pingouin (1991 SF1) Classification: Main-belt Asteroid          SPK-ID: 2006790 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2057188759540178 2.2172e-08   a 2.341685578583063 6.5465e-09 au q 1.859956653519221 5.1888e-08 au i 11.11367985452695 4.0965e-06 deg node 204.0242907219522 1.3682e-05 deg peri 93.83876191530553 1.7445e-05 deg M 102.9345357769796 1.1026e-05 deg tp 2458826.260255189105 (2019-Dec-08.76025519) 3.9681e-05 TDB period 1308.854284084241 3.58 5.4886e-06 1.503e-08 d yr n .2750497166702399 1.1534e-09 deg/d Q 2.823414503646904 7.8932e-09 au   Orbit Determination Parameters    # obs. used (total)      2549      data-arc span      11334 days (31.03 yr)      first obs. used      1990-03-02      last obs. used      2021-03-13      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .40827      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 19:06:01   Additional Information  Earth MOID = .883159 au   Jupiter MOID = 2.47605 au   T_jup = 3.510  [ 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 13.54   n/a E2021B10   diameter diameter 4.773 km 0.088 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 12. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Clark, M. (2007) Minor Planet Bull. 34, 19-22.] geometric albedo albedo 0.371   0.073 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   6790 Pingouin           Discovered 1991 Sept. 28 by S. Otomo at Kiyosato. Named for an Arctic bird, similar to the penguin of Antarctica. The pingouin become extinct in Newfoundland in 1844. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 19990728/MPCPages.arc Last Updated: 2010-06-11 [ show close-approach data ] Alternate Designations  1991 SF1 = 1990 EN  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-May-06 02:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin