+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1040 Klumpkea (1925 BD) Classification: Main-belt Asteroid          SPK-ID: 2001040 [ 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 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1911905465872935 1.7651e-08   a 3.113210105263156 1.2871e-08 au q 2.517993763596808 5.8232e-08 au i 16.68804907981011 1.3895e-06 deg node 280.1733329560556 2.0067e-06 deg peri 157.8810579800704 5.7718e-06 deg M 183.8393536609231 8.0409e-06 deg tp 2460182.287432095799 (2023-Aug-25.78743210) 4.8451e-05 TDB period 2006.370224562947 5.49 1.2443e-05 3.407e-08 d yr n .1794285000807465 1.1128e-09 deg/d Q 3.708426446929504 1.5332e-08 au   Orbit Determination Parameters    # obs. used (total)      2367      data-arc span      34937 days (95.65 yr)      first obs. used      1925-01-20      last obs. used      2020-09-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .36485      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 11:52:41   Additional Information  Earth MOID = 1.54107 au   Jupiter MOID = 1.55927 au   T_jup = 3.126  [ 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 10.51   n/a E2021B10   diameter diameter 22.340 km 0.175 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 59.2 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Stephens, R.D. (2002) Minor Planet Bull. 29, 47-48.] [Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.] geometric albedo albedo 0.245   0.043 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   1040 Klumpkea (1925 BD)          Discovered 1925-Jan-20 by Jekhovsky, B. at Algiers Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1925 BD = 1930 DC1 = 1936 BB  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-15 22:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin