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146121 (2000 RR18)
Classification: Main-belt Asteroid          SPK-ID: 2146121
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1485649594061362 5.6877e-08  
a 3.036051511884808 2.4796e-08 au
q 2.585000642266703 1.7683e-07 au
i 8.205207518258856 5.634e-06 deg
node 295.4066591541663 4.0511e-05 deg
peri 39.03101179972835 4.3763e-05 deg
M 310.5811032832052 1.8824e-05 deg
tp 2459465.748340441504
(2021-Sep-08.24834044)
0.00010255 TDB
period 1932.244726266621
5.29
2.3671e-05
6.481e-08
d
yr
n .1863118036272623 2.2824e-09 deg/d
Q 3.487102381502913 2.8479e-08 au
  Orbit Determination Parameters
   # obs. used (total)      397  
   data-arc span      7208 days (19.73 yr)  
   first obs. used      2000-09-01  
   last obs. used      2020-05-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59113  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 14:30:41  

Additional Information
 Earth MOID = 1.57876 au 
 Jupiter MOID = 1.88528 au 
 T_jup = 3.209 
[ 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 14.9   n/a MPO426922  
diameter diameter 7.457 km 0.285 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.042   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

146121 (2000 RR18)          Discovered 2000-Sep-01 by LINEAR at Socorro
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1906-Aug-07 12:54 00:04 Jupiter 1.98736761743611 1.98736624198592 1.98736899289522 3.64730490560371 3.52851620320293 2417430.037673492 4.13766572553088 235.778912803293 17.1473224303099 -75.3325618746828 2790463.78946055 T 15 CATAB v2.0f-lin.ifort 2020-Nov-12 14:30:43 2020-Nov-12 14:30
1954-Jul-08 00:45 00:02 Jupiter 1.92375520594968 1.92375454251589 1.92375586938642 3.51946704247093 3.39205769967638 2434931.531155601 2.29166656860554 160.511223117399 15.9825445444872 -81.4920976957096 2652661.6854453 T 15 CATAB v2.0f-lin.ifort 2020-Nov-12 14:30:43 2020-Nov-12 14:30
2002-Jun-03 18:33 < 00:01 Jupiter 1.88813033810912 1.88812989912663 1.88813077709173 3.3857830178977 3.25058748056803 2452429.272585645 0.514808983381016 100.362871463151 16.4561268026031 -84.7874484670143 2763948.14606501 T 15 CATAB v2.0f-lin.ifort 2020-Nov-12 14:30:43 2020-Nov-12 14:30
2050-Apr-30 08:35 00:01 Jupiter 1.8847740770898 1.88477359578652 1.88477455839309 3.21927920148763 3.07651641034216 2469926.857513824 1.37190073890767 137.443374609215 20.0973977568486 -86.5445011620081 2513750.46710204 T 15 CATAB v2.0f-lin.ifort 2020-Nov-12 14:30:43 2020-Nov-12 14:30
2098-Mar-29 08:05 00:03 Jupiter 1.92013331566138 1.92013255278739 1.92013407853635 3.02476964692403 2.87523521747826 2487426.836937175 3.22046453034581 185.632896072374 36.1963141701849 -82.4929946039759 2370496.87347135 T 15 CATAB v2.0f-lin.ifort 2020-Nov-12 14:30:43 2020-Nov-12 14:30
2146-Mar-01 18:54 00:05 Jupiter 1.97988170899385 1.97988026967418 1.97988314834323 2.81154298869506 2.65502251603878 2504930.287182637 5.15432892876786 468.481707378162 32.345181776346 -80.1228931594591 2260582.93953996 T 15 CATAB v2.0f-lin.ifort 2020-Nov-12 14:30:43 2020-Nov-12 14:30
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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