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1189 Terentia (1930 SG)
Classification: Main-belt Asteroid          SPK-ID: 2001189
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1128948655490059 3.6425e-08  
a 2.934340863783499 1.4194e-08 au
q 2.603068846491707 1.0676e-07 au
i 9.868933189877021 4.7848e-06 deg
node 275.2085340738829 2.3958e-05 deg
peri 95.02977787482385 3.224e-05 deg
M 300.4694034704779 2.2547e-05 deg
tp 2459304.100164865476
(2021-Mar-30.60016487)
0.00011592 TDB
period 1835.964457325231
5.03
1.3321e-05
3.647e-08
d
yr
n .1960822272804097 1.4227e-09 deg/d
Q 3.265612881075291 1.5796e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3175  
   data-arc span      37962 days (103.93 yr)  
   first obs. used      1915-10-14  
   last obs. used      2019-09-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39634  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 17:53:51  

Additional Information
 Earth MOID = 1.62647 au 
 Jupiter MOID = 2.27562 au 
 T_jup = 3.243 
[ 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 9.9   n/a MPO350808  
diameter diameter 59.246 km 0.201 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 19.308 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2002) Minor Planet Bull. 29, 47-48.]
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.042   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B Ch   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)

1189 Terentia (1930 SG)          Discovered 1930-Sep-17 by Neujmin, G. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1930 SG = 1935 SK2 = A915 TJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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