+ 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 39 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2215713411112366 1.9972e-08   a 2.328508125187829 5.1815e-09 au q 1.812577457101551 4.7489e-08 au i 10.08812087921647 5.9933e-07 deg node 61.33228591784431 2.4907e-06 deg peri 202.9918946375579 3.8248e-06 deg M 70.48162170332724 4.4364e-06 deg tp 2458946.409486552978 (2020-Apr-06.90948655) 1.5646e-05 TDB period 1297.821795672583 3.55 4.3319e-06 1.186e-08 d yr n .2773878518609973 9.2588e-10 deg/d Q 2.844438793274108 6.3296e-09 au   Orbit Determination Parameters    # obs. used (total)      3229      data-arc span      41370 days (113.26 yr)      first obs. used      1907-11-07      last obs. used      2021-02-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .38288      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 11:23:13   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-Apr-23 06:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin