+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1843 Jarmila (1972 AB) Classification: Main-belt Asteroid          SPK-ID: 2001843 [ 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 .1695643899574982 3.5328e-08   a 2.652410949904991 8.7625e-09 au q 2.202656505267763 9.4766e-08 au i 8.416230902813584 3.413e-06 deg node 266.8968324813075 2.9191e-05 deg peri 32.5209446962468 3.1187e-05 deg M 294.574985368058 1.2936e-05 deg tp 2459487.248379823760 (2021-Sep-29.74837982) 5.724e-05 TDB period 1577.827950322759 4.32 7.8187e-06 2.141e-08 d yr n .2281617586545852 1.1306e-09 deg/d Q 3.102165394542219 1.0248e-08 au   Orbit Determination Parameters    # obs. used (total)      3030      data-arc span      31218 days (85.47 yr)      first obs. used      1935-08-29      last obs. used      2021-02-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .41937      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 13:01:14   Additional Information  Earth MOID = 1.19009 au   Jupiter MOID = 2.1117 au   T_jup = 3.354  [ 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 11.92   n/a E2021B10   diameter diameter 28.965 km 0.224 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 7.434 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Benishek, V. (2018) Minor Planet Bull. 45, 82-91.] geometric albedo albedo 0.045   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   1843 Jarmila (1972 AB)          Discovered 1972-Jan-14 by Kohoutek, L. at Bergedorf Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1972 AB = 1935 PD = 1952 MU = 1952 OV = 1965 OF  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 01:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin