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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1118905035795416 2.2139e-08  
a 2.930839485636739 1.0602e-08 au
q 2.602906379678039 6.7975e-08 au
i 9.866551092585389 6.9997e-07 deg
node 275.1890281130139 3.3877e-06 deg
peri 95.31924809011801 1.1327e-05 deg
M 17.91882246999748 9.5014e-06 deg
tp 2459305.279290934475
(2021-Mar-31.77929093)
4.8358e-05 TDB
period 1832.679313530455
5.02
9.9442e-06
2.723e-08
d
yr
n .1964337117476923 1.0659e-09 deg/d
Q 3.258772591595438 1.1788e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3900  
   data-arc span      38622 days (105.74 yr)  
   first obs. used      1915-10-14  
   last obs. used      2021-07-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36773  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:25:11  

Additional Information
 Earth MOID = 1.62558 au 
 Jupiter MOID = 2.27978 au 
 T_jup = 3.245 
[ 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 10.01   n/a E2021B10  
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. 2020-October); 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]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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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