+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   601 Nerthus (A906 MC) Classification: Main-belt Asteroid          SPK-ID: 2000601 [ 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 95 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .104058275278293 1.543e-08   a 3.134921960860498 1.2152e-08 au q 2.80870738848131 5.3056e-08 au i 16.14646015276634 1.3048e-06 deg node 169.542194828416 2.4338e-06 deg peri 160.2376766737551 1.1234e-05 deg M 189.0997282338888 1.3411e-05 deg tp 2460162.951338303956 (2023-Aug-06.45133830) 7.7964e-05 TDB period 2027.395733247337 5.55 1.1788e-05 3.227e-08 d yr n .1775677013107736 1.0325e-09 deg/d Q 3.461136533239686 1.3416e-08 au   Orbit Determination Parameters    # obs. used (total)      3072      data-arc span      41906 days (114.73 yr)      first obs. used      1906-06-21      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .40851      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 11:09:44   Additional Information  Earth MOID = 1.80226 au   Jupiter MOID = 1.98305 au   T_jup = 3.143  [ 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 9.71   n/a E2021B10 IRAS observations used: 26 diameter diameter 75.535 km 0.504 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 13.59 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Stephens, R.D. (2007) Minor Planet Bull. 34, 14-15.] [Collaborative Asteroid Lightcurve Link (CALL) (2011) http://www.minorplanetobserver.com/DATA/submissions_results.htm] [Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] geometric albedo albedo 0.043   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.660   0.049 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=3.92 deg. Tholen spectral type spec_T X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices SMASSII spectral type spec_B C   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) 601 Nerthus (A906 MC)          Discovered 1906-Jun-21 by Wolf, M. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A906 MC = 1934 NF1 = 1940 RB1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 01:03 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin