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

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0945035160076849 3.9712e-08  
a 1.933918963840088 4.3169e-09 au
q 1.751156822083261 7.7457e-08 au
i 17.90117925668147 5.8794e-06 deg
node 267.6416640846123 1.2443e-05 deg
peri 77.70686715395415 3.2412e-05 deg
M 287.0861609744585 2.8996e-05 deg
tp 2458799.458867096080
(2019-Nov-11.95886710)
7.9208e-05 TDB
period 982.3264432626964
2.69
3.2891e-06
9.005e-09
d
yr
n .3664769511897664 1.2271e-09 deg/d
Q 2.116681105596915 4.7249e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1965  
   data-arc span      33174 days (90.83 yr)  
   first obs. used      1928-12-30  
   last obs. used      2019-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .36066  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:01:12  

Additional Information
 Earth MOID = .811874 au 
 Jupiter MOID = 3.16414 au 
 T_jup = 3.846 
[ 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 12.25   n/a PDS3 (MPC 17261)  
diameter diameter 6.692 km 0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 3.03784 h n/a LCDB (Rev. 2019-January); 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 Sci. 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 Bull. 31, 77-78.]
[Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J. (2006) IAU 2006, poster paper.]
[Behrend, R. (2011) 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.]
[Warner, B.D (2012) Minor Planet Bull. 39, 16-21.]
[Warner, B.D. (2015) Minor Planet Bull. 42, 54-60.]
[Warner, B.D. (2015) Minor Planet Bull. 42, 132-136.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.384   0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.731   0.023 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=18.54, mean=18.80, max.=19.05) deg.
U-B UB 0.242   0.046 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #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

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