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4426 Roerich (1969 TB6)
Classification: Main-belt Asteroid          SPK-ID: 2004426
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 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06702764877661112 2.2328e-08  
a 2.753479918613085 9.8706e-09 au
q 2.568920633714835 6.0108e-08 au
i 2.093007059113207 9.1751e-07 deg
node 236.9708102450424 3.1183e-05 deg
peri 55.3826808554444 3.4291e-05 deg
M 155.3781592444809 1.079e-05 deg
tp 2458480.207706211518
(2018-Dec-27.70770621)
4.8974e-05 TDB
period 1668.865347772898
4.57
8.9737e-06
2.457e-08
d
yr
n .2157154263406692 1.1599e-09 deg/d
Q 2.938039203511334 1.0532e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3185  
   data-arc span      30964 days (84.77 yr)  
   first obs. used      1936-06-14  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43411  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:37:13  

Additional Information
 Earth MOID = 1.55151 au 
 Jupiter MOID = 2.16879 au 
 T_jup = 3.340 
[ 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 12.28   n/a MPCxxxxx  
diameter diameter 10.641 km 0.106 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.190   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
SMASSII spectral type spec_B L   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)

4426 Roerich (1969 TB6)          Discovered 1969-Oct-15 by Chernykh, L. I. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1969 TB6 = 1936 LD = 1972 GF = 1974 VB1 = 1978 RW4 = 1978 TK3 = 1979 YM7 = 1981 GV = 1986 LP1 = 1987 SP 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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