+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1209 Pumma (1927 HA) Classification: Main-belt Asteroid          SPK-ID: 2001209 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 49 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1279249307643991 1.4248e-08   a 3.170237375010718 1.2657e-08 au q 2.764684978305762 4.6742e-08 au i 6.938013353677567 1.3321e-06 deg node 89.76505534930827 5.8152e-06 deg peri 176.8513922552287 1.0023e-05 deg M 186.7877898899936 1.0603e-05 deg tp 2460388.500981394894 (2024-Mar-19.00098139) 6.3457e-05 TDB period 2061.750456710622 5.64 1.2347e-05 3.38e-08 d yr n .1746089100299532 1.0456e-09 deg/d Q 3.575789771715674 1.4276e-08 au   Orbit Determination Parameters    # obs. used (total)      3374      data-arc span      34337 days (94.01 yr)      first obs. used      1927-04-22      last obs. used      2021-04-25      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .44054      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 12:06:11   Additional Information  Earth MOID = 1.74873 au   Jupiter MOID = 1.51003 au   T_jup = 3.178  [ 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 10.73   n/a E2021B10   diameter diameter 26.889 km 0.253 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 8.5001 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.141   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   1209 Pumma (1927 HA)          Discovered 1927-Apr-22 by Reinmuth, K. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1927 HA = 1950 JQ = 1963 UU  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jul-28 03:46 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin