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4108 Rakos (3439 T-3)
Classification: Main-belt Asteroid          SPK-ID: 2004108
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1260146681232716 3.4462e-08  
a 2.642116139056784 9.0289e-09 au
q 2.309170750650404 9.0902e-08 au
i 1.461840026056519 3.9832e-06 deg
node 195.2283825482274 0.00011353 deg
peri 340.1388573224939 0.00011423 deg
M 229.1685305321176 1.3688e-05 deg
tp 2459770.580257635589
(2022-Jul-10.08025764)
6.0861e-05 TDB
period 1568.650826773703
4.29
8.0408e-06
2.201e-08
d
yr
n .2294965800263046 1.1764e-09 deg/d
Q 2.975061527463165 1.0167e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2238  
   data-arc span      25301 days (69.27 yr)  
   first obs. used      1951-11-29  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46973  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 15:57:24  

Additional Information
 Earth MOID = 1.3133 au 
 Jupiter MOID = 1.98845 au 
 T_jup = 3.383 
[ 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 13.91   n/a E2021B10  
diameter diameter 10.253 km 0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

4108 Rakos (3439 T-3)          Discovered 1977-Oct-16 by van Houten and Gehrels at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 3439 T-3 = 1975 EQ4 = 1979 BA2 = 1984 HW1 = 1988 FA3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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