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4076 Dorffel (1982 UF4)
Classification: Main-belt Asteroid          SPK-ID: 2004076
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06811908321571612 1.809e-08  
a 2.852082456856907 1.0906e-08 au
q 2.657801214640187 5.4569e-08 au
i 1.355321476801733 8.0011e-07 deg
node 346.3847998830618 2.2982e-05 deg
peri 63.35848246434956 3.2691e-05 deg
M 294.8272731033612 1.3641e-05 deg
tp 2459518.996698440171
(2021-Oct-31.49669844)
6.695e-05 TDB
period 1759.306644024663
4.82
1.0091e-05
2.763e-08
d
yr
n .2046260674469171 1.1737e-09 deg/d
Q 3.046363699073627 1.1649e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3054  
   data-arc span      22264 days (60.96 yr)  
   first obs. used      1960-01-22  
   last obs. used      2021-01-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43217  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:54:58  

Additional Information
 Earth MOID = 1.66737 au 
 Jupiter MOID = 2.20622 au 
 T_jup = 3.301 
[ 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 12.30   n/a MPCxxxxx  
diameter diameter 8.968 km 0.152 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 3.18 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:
[Chang, C.-H.; Lin, H.-W.; Ip, W.-H.; Chen, W.-P.; et al. (2019) Ap. J. Supp. Ser. 241, A6.]
geometric albedo albedo 0.317   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4076 Dorffel (1982 UF4)          Discovered 1982-Oct-19 by Borngen, F. at Tautenburg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1982 UF4 = 1960 BF = 1968 UY = 1973 YB1 = 1977 RL8 = 1984 AF = 1987 US1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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