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74168 (1998 RK2)
Classification: Main-belt Asteroid          SPK-ID: 2074168
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07272721699359375 5.3352e-08  
a 2.761249940110996 1.7727e-08 au
q 2.560431916542996 1.4974e-07 au
i 5.43694840763301 5.348e-06 deg
node 105.1150574106804 6.4672e-05 deg
peri 289.5868461897115 7.4911e-05 deg
M 234.8531260942818 3.8146e-05 deg
tp 2459583.105407104157
(2022-Jan-03.60540710)
0.00017907 TDB
period 1675.934364253531
4.59
1.6139e-05
4.419e-08
d
yr
n .2148055482831188 2.0685e-09 deg/d
Q 2.962067963678995 1.9016e-08 au
  Orbit Determination Parameters
   # obs. used (total)      570  
   data-arc span      10250 days (28.06 yr)  
   first obs. used      1992-04-29  
   last obs. used      2020-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66405  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:44:44  

Additional Information
 Earth MOID = 1.57352 au 
 Jupiter MOID = 2.35348 au 
 T_jup = 3.331 
[ 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 15.2   n/a MPO337817  
diameter diameter 5.045 km 0.148 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74168 (1998 RK2)          Discovered 1998-Sep-15 by ODAS at Caussols
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 RK2 = 2000 BM16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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