+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   544 Jetta (A904 RH) Classification: Main-belt Asteroid          SPK-ID: 2000544 [ 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 42 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .153477249201715 2.3886e-08   a 2.592636823170793 7.395e-09 au q 2.194726055371466 6.382e-08 au i 8.37228320145892 8.3434e-07 deg node 298.3028744890316 6.2781e-06 deg peri 343.3298399732133 8.9271e-06 deg M 23.4204743363555 3.5819e-06 deg tp 2459101.301720397195 (2020-Sep-08.80172040) 1.5121e-05 TDB period 1524.793227674941 4.17 6.5238e-06 1.786e-08 d yr n .2360975858667347 1.0101e-09 deg/d Q 2.990547590970119 8.53e-09 au   Orbit Determination Parameters    # obs. used (total)      3054      data-arc span      42446 days (116.21 yr)      first obs. used      1904-09-12      last obs. used      2020-11-28      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .42201      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 11:03:36   Additional Information  Earth MOID = 1.17783 au   Jupiter MOID = 2.17492 au   T_jup = 3.387  [ 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 10.03   n/a E2021B10   diameter diameter 27.169 km 0.173 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 7.745 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [LeCrone, C.; Mills, G.; Ditteon, R. (2005) Minor Planet Bull. 32, 62-64.] [Stephens, R.D. (2005) Minor Planet Bull. 32, 2-3.] [Durech, J.; Kaasalainen, M.; Warner, B.D.; Fauerbach, M.; et al. (2009) Astron. Astrophys. 493, 291-297.] [Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.] geometric albedo albedo 0.262   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   544 Jetta (A904 RH)          Discovered 1904-Sep-11 by Gotz, P. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A904 RH = 1937 UJ = 1937 VS  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-23 09:54 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin