+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11901 (1991 PV11) Classification: Main-belt Asteroid          SPK-ID: 2011901 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1597440363877415 1.2102e-08   a 2.416491941096952 8.1735e-09 au q 2.030471764527676 3.2747e-08 au i 13.08825785287906 8.7643e-07 deg node 147.0109462969855 2.2862e-06 deg peri 94.4401453896018 7.4498e-06 deg M 10.23527677046399 9.8832e-06 deg tp 2459161.490216176731 (2020-Nov-07.99021618) 3.758e-05 TDB period 1372.070584051277 3.76 6.9613e-06 1.906e-08 d yr n .2623771722712962 1.3312e-09 deg/d Q 2.802512117666228 9.4791e-09 au   Orbit Determination Parameters    # obs. used (total)      2270      data-arc span      11076 days (30.32 yr)      first obs. used      1990-03-17      last obs. used      2020-07-13      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .50119      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 23:01:13   Additional Information  Earth MOID = 1.0666 au   Jupiter MOID = 2.32968 au   T_jup = 3.464  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.82   n/a E2021B10   diameter diameter 5.272 km 0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 9.3768 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (2013) http://www.asu.cas.cz/~ppravec/neo.htm] [Oey, J. (2014) Minor Planet Bull. 41, 276-281.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] geometric albedo albedo 0.253   0.041 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11901 (1991 PV11)          Discovered 1991-Aug-07 by Holt, H. E. at Palomar Reference: 19991026/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1991 PV11 = 1990 FG5 = 1998 MR9  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-22 15:48 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin