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4434 Nikulin (1981 RD5)
Classification: Main-belt Asteroid          SPK-ID: 2004434
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 48 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1320808697273392 2.0025e-08  
a 2.441559036789984 6.6167e-09 au
q 2.119075795720119 4.8991e-08 au
i 5.709332731094867 1.7736e-06 deg
node 165.7327447436415 7.5563e-06 deg
peri 209.5351495068838 1.6236e-05 deg
M 93.52033260735625 9.8937e-06 deg
tp 2458838.504798418951
(2019-Dec-21.00479842)
3.8189e-05 TDB
period 1393.475289660451
3.82
5.6645e-06
1.551e-08
d
yr
n .2583468847070273 1.0502e-09 deg/d
Q 2.76404227785985 7.4906e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2902  
   data-arc span      15899 days (43.53 yr)  
   first obs. used      1977-09-08  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42279  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:37:39  

Additional Information
 Earth MOID = 1.1202 au 
 Jupiter MOID = 2.70182 au 
 T_jup = 3.482 
[ 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 13.18   n/a MPCxxxxx  
diameter diameter 5.116 km 0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.354   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B V   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

4434 Nikulin (1981 RD5)          Discovered 1981-Sep-08 by Zhuravleva, L. V. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1981 RD5 = 1977 RL1 = 1985 UG4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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