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1103 Sequoia (1928 VB)
Classification: Inner Main-belt Asteroid          SPK-ID: 2001103
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0945336323758806 6.2698e-08  
a 1.933461717423684 6.6495e-09 AU
q 1.750684558215915 1.2056e-07 AU
i 17.90215753184572 5.7739e-06 deg
node 267.6852627353639 1.7765e-05 deg
peri 77.63167910875939 3.5473e-05 deg
M 60.6473408333097 2.8127e-05 deg
tp 2456835.071224292860
(2014-Jun-26.57122429)
7.6729e-05 JED
period 981.9780791091365
2.69
5.0657e-06
1.387e-08
d
yr
n .3666069616610961 1.8912e-09 deg/d
Q 2.116238876631454 7.278e-09 AU
  Orbit Determination Parameters
   # obs. used (total)      982  
   data-arc span      31439 days (86.08 yr)  
   first obs. used      1928-12-30  
   last obs. used      2015-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .41983  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 12:56:56  

Additional Information
 Earth MOID = .813024 AU 
 T_jup = 3.846 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.25 mag n/a PDS3 (MPC 17261)  
rotation period rot_per 3.03784 h n/a LCDB (Rev. 2015-Feb); Warner et al., 2009 Published Reference List:
[Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Science XXVI, 1511-1512.]
[Shevchenko, V.G.; Krugly, Yu.N.; Chiorny, V.G.; Bel'skaya, I.N.; Gaftonyuk, N.M. (2003) Planet. Space Sci. 51, 525-532.]
[LeCrone, C.; Duncan, A.; Kirkpatrick, E. (2004) Minor Planet Bul. 31, 77-78.]
[Durech, J. (2006) IAU 2006, poster paper.]
[Behrend, R. (2006) 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.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Warner, B.D (2012) Minor Planet Bul. 39, 16-21.]
[Warner, B.D. (2015) Minor Planet Bul. 42, 54-60.]
[Warner, B.D. (2015) Minor Planet Bul. 42, submitted. (5 asteroids of interest)]
B-V BV .731 mag .023 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=18.54, mean=18.80, max.=19.05) deg.
U-B UB .242 mag .046 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=2; phase (min.=18.54, mean=18.80, max.=19.05) deg.
Tholen spectral type spec_T E   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Xk   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)

1103 Sequoia (1928 VB)          Discovered 1928-Nov-09 by Baade, W. at Bergedorf
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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