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4727 Ravel (1979 UD1)
Classification: Main-belt Asteroid          SPK-ID: 2004727
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09237561259079942 2.1394e-08  
a 2.898229232064216 1.1815e-08 au
q 2.630503531323722 6.2696e-08 au
i 3.199497528058278 1.2631e-06 deg
node 133.1514120034184 1.4129e-05 deg
peri 229.1811528713161 1.5701e-05 deg
M 140.3795982882729 9.8003e-06 deg
tp 2458497.752967853253
(2019-Jan-14.25296785)
4.7129e-05 TDB
period 1802.177343842445
4.93
1.102e-05
3.017e-08
d
yr
n .1997583651964238 1.2215e-09 deg/d
Q 3.165954932804711 1.2906e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2756  
   data-arc span      15159 days (41.50 yr)  
   first obs. used      1979-09-22  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46246  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:48:32  

Additional Information
 Earth MOID = 1.62725 au 
 Jupiter MOID = 2.26641 au 
 T_jup = 3.279 
[ 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 12.95   n/a MPCxxxxx  
diameter diameter 7.216 km 0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.44 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Ergashev, K.E.; Ehgamberdiev, Sh.A.; Burkhonov, O.A.; Yoshida, F. (2014) Minor Planet Bull. 41, 79.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
geometric albedo albedo 0.257   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4727 Ravel (1979 UD1)          Discovered 1979-Oct-24 by Borngen and Kirsch at Tautenburg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1979 UD1 = 1984 SH4 = 1989 UU 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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