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1920 Sarmiento (1971 VO)
Classification: Inner Main-belt Asteroid          SPK-ID: 2001920
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1055697688510932 1.4299e-08  
a 1.930064387101774 4.4363e-09 au
q 1.726307935887712 2.8324e-08 au
i 22.79900676730504 1.1596e-06 deg
node 64.0256168005546 1.3854e-06 deg
peri 316.966942444932 3.7177e-06 deg
M 120.5747220108669 5.2387e-06 deg
tp 2458872.472773899426
(2020-Jan-23.97277390)		 1.3411e-05 TDB
period 979.3910317749989
2.68		 3.3767e-06
9.245e-09		 d
yr
n .367575348681266 1.2673e-09 deg/d
Q 2.133820838315835 4.9047e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1887  
   data-arc span      18021 days (49.34 yr)  
   first obs. used      1971-11-11  
   last obs. used      2021-03-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39238  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 13:06:42  

Additional Information
 Earth MOID = .767218 au 
 Jupiter MOID = 3.25916 au 
 T_jup = 3.813 
[ show covariance matrix ]

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0   n/a MPO502171  
diameter diameter 2.854 km 0.164 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.048 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2007) Minor Planet Bull. 34, 32-37.]
[Stephens, R.D.; Coley, D.; Warner, B.D. (2014) Minor Planet Bull. 41, 8-13.]
[Warner, B.D. (2015) Minor Planet Bull. 42, 108-114.]
geometric albedo albedo 0.466   0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
B-V BV 0.720   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=11.71 deg.
U-B UB 0.257   0.031 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=11.71 deg.
Tholen spectral type spec_T X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 4 color indices

1920 Sarmiento (1971 VO)          Discovered 1971-Nov-11 by Gibson, J. and Cesco, C. U. at El Leoncito
Reference: DISCOVERY.DBLast Updated: 2003-08-29
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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