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3784 Chopin (1986 UL1)
Classification: Main-belt Asteroid          SPK-ID: 2003784
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 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1640917955387022 1.6112e-08  
a 3.131495501552656 1.8936e-08 au
q 2.617642781981512 5.4599e-08 au
i 13.53565046943201 1.0517e-06 deg
node 94.52045126947165 2.5837e-06 deg
peri 192.7886030099952 7.7309e-06 deg
M 170.05517362432 1.0935e-05 deg
tp 2458244.377664931358
(2018-May-05.87766493)
5.8987e-05 TDB
period 2024.072736446789
5.54
1.836e-05
5.027e-08
d
yr
n .1778592209250204 1.6133e-09 deg/d
Q 3.645348221123801 2.2044e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3726  
   data-arc span      23750 days (65.02 yr)  
   first obs. used      1956-03-15  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .36464  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:12:13  

Additional Information
 Earth MOID = 1.60109 au 
 Jupiter MOID = 1.52625 au 
 T_jup = 3.150 
[ 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 11.52   n/a E2021B10  
diameter diameter 29.346 km 0.459 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 20.9902 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.082   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

3784 Chopin (1986 UL1)          Discovered 1986-Oct-31 by Elst, E. W. at Haute Provence
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1986 UL1 = 1951 KY = 1977 AB2 = 1978 GG2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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