+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2881 Meiden (1983 AA1) Classification: Main-belt Asteroid          SPK-ID: 2002881 [ 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 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .15458791734011 2.9394e-08   a 2.247412392364829 5.558e-09 au q 1.899989591224796 6.5863e-08 au i 4.616111065761586 3.6326e-06 deg node 172.9978440596086 3.9079e-05 deg peri 326.5481082252322 4.0749e-05 deg M 75.81142808880054 1.1517e-05 deg tp 2458941.347883142462 (2020-Apr-01.84788314) 3.9191e-05 TDB period 1230.616074919923 3.37 4.5651e-06 1.25e-08 d yr n .2925364029747665 1.0852e-09 deg/d Q 2.594835193504862 6.4172e-09 au   Orbit Determination Parameters    # obs. used (total)      2722      data-arc span      30790 days (84.30 yr)      first obs. used      1936-03-17      last obs. used      2020-07-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .43975      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:05:11   Additional Information  Earth MOID = .914764 au   Jupiter MOID = 2.42741 au   T_jup = 3.610  [ 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 13.14   n/a E2020-QM5   diameter diameter 5.672 km 0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 3.48011 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Brinsfield, J.W. (2010) Minor Planet Bull. 37, 146-147.] [Polakis, T.; Skiff, B.A.; Pravec, P.; Warner, B.D. (2017) CBET 4387.] [Aznar, A.M.; Cornea, R.; Suciu, O. (2018) Minor Planet Bull. 45, 92-96.] [Ditteon, R.; Young, J. (2018) Minor Planet Bull. 45, 117-119.] geometric albedo albedo 0.241   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 2881 Meiden (1983 AA1)          Discovered 1983-Jan-12 by Skiff, B. A. at Flagstaff (AM) Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory. Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1983 AA1 = 1936 FS1 = 1936 FZ1 = 1953 GP1 = 1953 GQ = 1968 UO2 = 1975 VL1 = 1978 RP5 = 1983 AZ1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-09 05:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin