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4755 Nicky (1931 TE4)
Classification: Main-belt Asteroid          SPK-ID: 2004755
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2502431700089632 2.0205e-08  
a 2.284327211404808 5.0928e-09 au
q 1.712689928685133 4.6299e-08 au
i 3.085741707293625 3.5482e-07 deg
node 102.0774654519197 6.5735e-06 deg
peri 275.884196646278 6.3309e-06 deg
M 298.2179594003373 3.2046e-06 deg
tp 2459416.919128791565
(2021-Jul-21.41912879)
1.18e-05 TDB
period 1261.060424821719
3.45
4.2172e-06
1.155e-08
d
yr
n .2854740287729627 9.5468e-10 deg/d
Q 2.855964494124482 6.3672e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2686  
   data-arc span      32479 days (88.92 yr)  
   first obs. used      1931-10-06  
   last obs. used      2020-09-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44529  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 16:43:36  

Additional Information
 Earth MOID = .716689 au 
 Jupiter MOID = 2.60936 au 
 T_jup = 3.559 
[ 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 13.95   n/a E2021B10  
diameter diameter 3.888 km 0.570 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  
rotation period rot_per 5.057 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Oey, J. (2008) Minor Planet Bull. 35, 132-135.]
geometric albedo albedo 0.357   0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

4755 Nicky (1931 TE4)          Discovered 1931-Oct-06 by Tombaugh, C. W. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1931 TE4 = 1969 TM3 = 1982 JO1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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