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JPL Small-Body Database Browser
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375 Ursula (A893 SB)
Classification: Main-belt Asteroid          SPK-ID: 2000375
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 65 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1053797321609872 3.8962e-08  
a 3.127897914973959 1.4342e-08 au
q 2.798280870467093 1.2651e-07 au
i 15.92968633368769 3.664e-06 deg
node 336.5006975601119 1.6627e-05 deg
peri 341.4626031839967 3.0758e-05 deg
M 296.822293380024 2.8859e-05 deg
tp 2458955.099924444930
(2020-Apr-15.59992444)
0.00016317 TDB
period 2020.58573553557
5.53
1.3897e-05
3.805e-08
d
yr
n .1781661592818181 1.2254e-09 deg/d
Q 3.457514959480825 1.5853e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2017  
   data-arc span      45973 days (125.87 yr)  
   first obs. used      1893-10-06  
   last obs. used      2019-08-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43951  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-23 19:08:08  

Additional Information
 Earth MOID = 1.78953 au 
 Jupiter MOID = 1.91238 au 
 T_jup = 3.146 
[ 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 7.47   n/a PDS3 (MPC 17258)  
magnitude slope G 0.27   n/a PDS3 (MPC 17258) Fit
diameter diameter 216 km n/a Dunham occult. list: Millis et al. 1984a Yeomans E-mail 2001-Apr-04
rotation period rot_per 16.899 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Schober, H.J. (1983) in Asteroids, Comets, Meteors. C.-I. Lagerkvist, H. Rickman, eds. Uppsala, p.21-26.]
[Schober, H.J. (1987) Astron. Astrophys. 183, 151-155.]
[Harris, A.W.; Young, J.W.; Bowell, E.; Tholen, D.J. (1999) Icarus 142, 173-201.]
[Hamanowa, H.; Hamanowa, H. (2011) http://www2.ocn.ne.jp/~hamaten/astlcdata.htm]
[Pilcher, F. (2017) Minor Planet Bull. 44, 249-251.]
geometric albedo albedo 0.037   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
B-V BV 0.683   0.015 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=8; phase (min.=3.22, mean=13.67, max.=18.14) deg.
U-B UB 0.341   0.047 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=3.22, mean=13.85, max.=18.14) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices
SMASSII spectral type spec_B Xc   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)

375 Ursula (A893 SB)          Discovered 1893-Sep-18 by Charlois, A. at Nice
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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