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JPL Small-Body Database Browser
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1317 Silvretta (1935 RC)
Classification: Outer Main-belt Asteroid          SPK-ID: 2001317
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.

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2350204309134578 5.2992e-08  
a 3.203756451392952 2.1461e-08 au
q 2.45080822964481 1.6394e-07 au
i 20.40894646123556 6.5834e-06 deg
node 6.171705706143066 1.2125e-05 deg
peri 33.83925868001419 1.6181e-05 deg
M 310.7483425568992 1.4253e-05 deg
tp 2459287.053697637400
8.4531e-05 TDB
period 2094.535219827709
n .1718758398484283 1.727e-09 deg/d
Q 3.956704673141094 2.6505e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1899  
   data-arc span      30627 days (83.85 yr)  
   first obs. used      1935-09-01  
   last obs. used      2019-07-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46262  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:51:40  

Additional Information
 Earth MOID = 1.47977 au 
 Jupiter MOID = 1.64971 au 
 T_jup = 3.054 
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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 9.9   n/a MPO492765  
diameter diameter 17.919 km 0.436 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
rotation period rot_per 7.048 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Schober, H.J.; Schroll, A. (1983) Astron. Astrophys. 120, 106-108.]
[Ruthroff, J.C. (2010) Minor Planet Bull. 37, 158-159.]
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
geometric albedo albedo 0.275   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
B-V BV 0.724   0.013 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=5.11, mean=6.72, max.=8.23) deg.
U-B UB 0.285   0.078 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=5.11, mean=6.67, max.=8.23) deg.
Tholen spectral type spec_T CX:   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices

1317 Silvretta (1935 RC)          Discovered 1935-Sep-01 by Reinmuth, K. at Heidelberg
In 1938 G. Neujmin found that planet 1317 = 1934 FD, discovered 1934 Mar. 19 by C. Jackson, Johannesburg (UO), is identical with 787 Moskva, discovered 1914 Apr. 20 by Neujmin. The number 1317 was later given to planet 1935 RC.
Note: "planet" implies "minor planet"
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1935 RC = 1949 HA1 = 1949 HY = 1952 YG = A912 RA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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