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30 Urania (A854 OA)
Classification: Main-belt Asteroid          SPK-ID: 2000030
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 116 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1278528847294799 1.5453e-08  
a 2.364782483994091 2.2106e-09 au
q 2.062438221657701 3.6206e-08 au
i 2.096014802689972 6.7605e-07 deg
node 307.4680401179185 1.0253e-05 deg
peri 87.27597580959763 1.5703e-05 deg
M 191.8163577515487 1.1173e-05 deg
tp 2459821.035282088248
(2022-Aug-29.53528209)
4.131e-05 TDB
period 1328.266522030482
3.64
1.8625e-06
5.099e-09
d
yr
n .2710299431846543 3.8003e-10 deg/d
Q 2.66712674633048 2.4932e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3629  
   data-arc span      58813 days (161.02 yr)  
   first obs. used      1860-02-22  
   last obs. used      2021-03-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47971  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 10:10:51  

Additional Information
 Earth MOID = 1.06905 au 
 Jupiter MOID = 2.73777 au 
 T_jup = 3.537 
[ 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 7.56   n/a E2021B10  
diameter diameter 92.787 km 2.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 13.686 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Bailey, S.J. (1913) Ann. Harvard Coll. Obs. 72, 165-189.]
[Rigollet, R. (1950) C. R. 230, 2077-2078.]
[Gehrels, T.; Owings, D. (1962) Astrophys. J. 135, 906-924.]
[Harris, A.W.; Young, J.W. (1980) Icarus 43, 20-32.]
[Wisniewski, W.Z.; Michalowski, T.M.; Harris, A.W.; McMillan, R.S. (1997) Icarus 126, 395-449; 1995, Lunar & Planetary Sci. XXVI, 1511-1512.]
[Durech, J. (2006) IAU 2006, poster paper.]
[Durech, J.; Kaasalainen, M.; Warner, B.D.; Fauerbach, M.; et al. (2009) Astron. Astrophys. 493, 291-297.]
[Hanus, J.; Marchis, F.; Durech, J. (2013) Icarus 226, 1045-1057.]
[Husar, D.; Kretlow, M. (2015) Minor Planet Bull. 42, 157-158.]
[Cellino, A.; Hestroffer, D.; Lu, X.-P.; Muinonen, K.; Tanga, P. (2019) Astron. Astrophys. 631, A67.]
geometric albedo albedo 0.192   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.873   0.022 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=.70, mean=9.32, max.=24.88) deg.
U-B UB 0.459   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=7; phase (min.=.70, mean=9.32, max.=24.88) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Sl   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)

30 Urania (A854 OA)          Discovered 1854-Jul-22 by Hind, J. R. at London
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A854 OA = 1948 JK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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