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74169 (1998 RX2)
Classification: Main-belt Asteroid          SPK-ID: 2074169
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1211833641620258 3.7567e-08  
a 2.564374872070713 1.3624e-08 au
q 2.25361529810062 9.4102e-08 au
i 7.786733441950926 4.6568e-06 deg
node 175.21519910 2.8553e-05 deg
peri 105.2730232432023 3.904e-05 deg
M 67.81869889613382 3.1783e-05 deg
tp 2458317.935467272937
(2018-Jul-18.43546727)
0.00013088 TDB
period 1499.928978843056
4.11
1.1953e-05
3.273e-08
d
yr
n .2400113639231637 1.9127e-09 deg/d
Q 2.875134446040807 1.5275e-08 au
  Orbit Determination Parameters
   # obs. used (total)      790  
   data-arc span      9192 days (25.17 yr)  
   first obs. used      1994-09-29  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60219  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:24:43  

Additional Information
 Earth MOID = 1.25216 au 
 Jupiter MOID = 2.27857 au 
 T_jup = 3.410 
[ 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 15.3   n/a MPO351366  
diameter diameter 4.852 km 0.231 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.062   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74169 (1998 RX2)          Discovered 1998-Sep-13 by Spacewatch at Kitt Peak
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 RX2 = 2001 FR16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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