+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   4145 Maximova (1981 SJ7) Classification: Main-belt Asteroid          SPK-ID: 2004145 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 41 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1995312509588187 4.0412e-08   a 2.272389287889865 8.4506e-09 au q 1.818976610611781 9.4036e-08 au i 4.866058765342109 3.9005e-06 deg node 292.6768259627682 4.3511e-05 deg peri 35.58795089655361 4.421e-05 deg M 144.4359636643119 8.2919e-06 deg tp 2458498.509648990371 (2019-Jan-15.00964899) 2.8055e-05 TDB period 1251.187874395848 3.43 6.9794e-06 1.911e-08 d yr n .287726573576195 1.605e-09 deg/d Q 2.725801965167949 1.0137e-08 au   Orbit Determination Parameters    # obs. used (total)      2054      data-arc span      19439 days (53.22 yr)      first obs. used      1967-08-14      last obs. used      2020-11-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .43754      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:15:57   Additional Information  Earth MOID = .810008 au   Jupiter MOID = 2.61857 au   T_jup = 3.580  [ hide covariance matrix ] Orbital Elements at Epoch 2456826.5 (2014-Jun-18.0) TDB Reference: JPL 41 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2003565904631762 4.044e-08   q 1.816359660545109 9.4117e-08 au tp 2457247.828573110846 (2015-Aug-13.32857311) 2.7121e-05 TDB node 292.7677892815357 4.3527e-05 deg peri 35.58438821250176 4.4217e-05 deg i 4.865879796172686 3.9014e-06 deg   Orbit Determination Parameters    # obs. used (total)      2054      data-arc span      19439 days (53.22 yr)      first obs. used      1967-08-14      last obs. used      2020-11-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .43754      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:15:57   Additional Information  Jupiter MOID = 2.61857 au   T_jup = 3.580  Orbit Covariance (6×6)   e q tp node peri i e 1.635394448957224E-15 -3.797174829520621E-15 1.014085488447047E-13 1.669845611296154E-14 1.572176081757917E-14 -2.284321750540855E-15 q -3.797174829520621E-15 8.85807520305736E-15 -2.353231122123609E-13 -3.854309131796517E-14 -4.078898258598429E-14 5.518907662386842E-15 tp 1.014085488447047E-13 -2.353231122123609E-13 7.355275775798733E-10 5.077119660336061E-12 2.219053873380455E-10 1.188063478520549E-13 node 1.669845611296154E-14 -3.854309131796517E-14 5.077119660336061E-12 1.894605706385794E-9 -1.885945408405533E-9 4.204165300826025E-11 peri 1.572176081757917E-14 -4.078898258598429E-14 2.219053873380455E-10 -1.885945408405533E-9 1.955151271849275E-9 -4.193087545391811E-11 i -2.284321750540855E-15 5.518907662386842E-15 1.188063478520549E-13 4.204165300826025E-11 -4.193087545391811E-11 1.522055202161012E-11 [ 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 13.5   n/a MPO350834   diameter diameter 5.266 km 0.154 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 19.872 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (2015) http://www.asu.cas.cz/~ppravec/neo.htm] [Benishek, V. (2016) Minor Planet Bull. 43, 339-342.] [Klinglesmith III, D.A.; Hendrickx, S.; Madden, K.; Montgomery, S. (2016) Minor Planet Bull. 43, 123-128.] [Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.] geometric albedo albedo 0.305   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   4145 Maximova (1981 SJ7)          Discovered 1981-Sep-29 by Zhuravleva, L. V. at Nauchnyj Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1981 SJ7 = 1967 PB = 1974 RC1 = 1981 WB5  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-20 01:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin