+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   753 Tiflis (A913 HH) Classification: Main-belt Asteroid          SPK-ID: 2000753 [ 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 37 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2215713054691714 3.3596e-08   a 2.328508124154368 5.6595e-09 au q 1.812577539289914 7.785e-08 au i 10.08812329095085 4.0967e-06 deg node 61.33225732857112 2.1867e-05 deg peri 202.9919132425167 2.3642e-05 deg M 70.4816343618656 9.993e-06 deg tp 2458946.409441087340 (2020-Apr-06.90944109) 3.5758e-05 TDB period 1297.821794808566 3.55 4.7316e-06 1.295e-08 d yr n .2773878520456667 1.0113e-09 deg/d Q 2.844438709018823 6.9134e-09 au   Orbit Determination Parameters    # obs. used (total)      3163      data-arc span      41348 days (113.20 yr)      first obs. used      1907-11-07      last obs. used      2021-01-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .38481      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 00:49:27   Additional Information  Earth MOID = .800092 au   Jupiter MOID = 2.24267 au   T_jup = 3.519  [ 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 10.20   n/a E2021B10 IRAS observations used: 2 diameter diameter 20.922 km 0.827 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 9.85 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Van Houten, C.J. (1962) Bul. Astron. Inst. Netherlands 16, 160-162.] [Binzel, R.P. (1987) Icarus 72, 135-208.] [Durech, J. (2006) IAU 2006, poster paper.] [Behrend, R. (2010) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.] geometric albedo albedo 0.333   0.050 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   B-V BV 0.936   0.028 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=10.51 deg. U-B UB 0.491   0.038 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=10.51 deg. Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices SMASSII spectral type spec_B L   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) 753 Tiflis (A913 HH)          Discovered 1913-Apr-30 by Neujmin, G. and Belyavskij, M. at Simeis Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A913 HH = A907 VK = A909 DD  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-02 17:59 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin