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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 115 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1278528844574201 1.5453e-08  
a 2.364782483018601 2.2106e-09 au
q 2.062438221450293 3.6206e-08 au
i 2.096014790134761 6.7605e-07 deg
node 307.4680405299491 1.0253e-05 deg
peri 87.27597504478639 1.5703e-05 deg
M 191.816358535955 1.1173e-05 deg
tp 2459821.035278810117
(2022-Aug-29.53527881)
4.131e-05 TDB
period 1328.266521208603
3.64
1.8625e-06
5.099e-09
d
yr
n .271029943352357 3.8004e-10 deg/d
Q 2.667126744586909 2.4933e-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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47964  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 10:29:55  

Additional Information
 Earth MOID = 1.06905 au 
 Jupiter MOID = 2.73777 au 
 T_jup = 3.537 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457125.5 (2015-Apr-13.0) TDB
Reference: JPL 115 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .126660850076348 1.5421e-08  
q 2.065851142948199 3.6091e-08 au
tp 2457161.899277959217
(2015-May-19.39927796)
4.1723e-05 TDB
node 307.6322985632164 1.0237e-05 deg
peri 86.73470892669832 1.5821e-05 deg
i 2.098010161056784 6.7632e-07 deg
  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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47964  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-16 10:29:55  

Additional Information
 Jupiter MOID = 2.73777 au 
 T_jup = 3.537 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.378104719028068E-16 -5.558034558040759E-16 8.750025798370785E-15 -7.130416650953335E-16 -1.135132147446156E-14 7.170125772581286E-16
q -5.558034558040759E-16 1.302593262974234E-15 -1.652613346458407E-14 1.292724742867665E-16 2.785267165898004E-14 -1.690107439578359E-15
tp 8.750025798370785E-15 -1.652613346458407E-14 1.740794111615494E-9 -1.750865599531908E-12 5.069405129625121E-10 -1.393008702064542E-12
node -7.130416650953335E-16 1.292724742867665E-16 -1.750865599531908E-12 1.047888020070459E-10 -1.025689343196066E-10 -5.400341081694371E-13
peri -1.135132147446156E-14 2.785267165898004E-14 5.069405129625121E-10 -1.025689343196066E-10 2.502913518013842E-10 1.049918461208161E-13
i 7.170125772581286E-16 -1.690107439578359E-15 -1.393008702064542E-12 -5.400341081694371E-13 1.049918461208161E-13 4.574139712838888E-13

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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