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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1488989513181276 5.6467e-08  
a 3.038337424128194 2.373e-08 au
q 2.585932167924885 1.765e-07 au
i 8.201669889186197 5.5962e-06 deg
node 295.4049824350371 3.8875e-05 deg
peri 38.74047540373515 4.1936e-05 deg
M 347.3274046059614 1.7494e-05 deg
tp 2459464.595043194795
(2021-Sep-07.09504319)
9.4341e-05 TDB
period 1934.427383490682
5.30
2.2662e-05
6.205e-08
d
yr
n .1861015838963045 2.1802e-09 deg/d
Q 3.490742680331503 2.7263e-08 au
  Orbit Determination Parameters
   # obs. used (total)      421  
   data-arc span      7614 days (20.85 yr)  
   first obs. used      2000-09-01  
   last obs. used      2021-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59224  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 01:36:55  

Additional Information
 Earth MOID = 1.58069 au 
 Jupiter MOID = 1.87992 au 
 T_jup = 3.208 
[ 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 1.98736771135632 1.98736643809718 1.98736898462315 3.64730505133267 3.52851636021346 2417430.037415603 3.85761232105136 220.184935112529 16.4367913206916 -75.5113938946387 2914968.8569414 T 17 CATAB v2.0g-lin.ifort 2021-Jul-09 01:36:56 2021-Jul-09 01:36
1954-Jul-08 00:45 00:02 Jupiter 1.9237552357688 1.9237546115077 1.92375586003231 3.51946674332331 3.39205739202151 2434931.531067630 2.13936306295574 150.388244909465 15.472249233521 -81.6018601614203 2732182.70219853 T 17 CATAB v2.0g-lin.ifort 2021-Jul-09 01:36:56 2021-Jul-09 01:36
2002-Jun-03 18:32 < 00:01 Jupiter 1.8881303693285 1.888129938242 1.88813080041501 3.3857826217596 3.25058707099838 2452429.272547029 0.488671925498489 96.377171606324 16.1028462188335 -84.5918946808499 2801040.87957365 T 17 CATAB v2.0g-lin.ifort 2021-Jul-09 01:36:56 2021-Jul-09 01:36
2050-Apr-30 08:35 00:01 Jupiter 1.88477409107156 1.88477361410089 1.88477456804234 3.21927858586252 3.07651576804014 2469926.857571916 1.2740522675319 133.482001329715 19.6667431984652 -86.2180231880841 2565341.52096222 T 17 CATAB v2.0g-lin.ifort 2021-Jul-09 01:36:56 2021-Jul-09 01:36
2098-Mar-29 08:06 00:03 Jupiter 1.92013337019766 1.92013262598898 1.92013411440721 3.0247686867952 2.87523421262043 2487426.837236838 2.99420285101635 183.476725928397 34.4429538024085 -82.5886917848439 2420004.57661901 T 17 CATAB v2.0g-lin.ifort 2021-Jul-09 01:36:56 2021-Jul-09 01:36
2146-Mar-01 18:54 00:05 Jupiter 1.97988188890964 1.97988051501371 1.97988326283146 2.81154170873253 2.65502117615183 2504930.287833822 4.79441427602068 443.56272225138 31.5211018077225 -80.223153952355 2273638.2361172 T 17 CATAB v2.0g-lin.ifort 2021-Jul-09 01:36:56 2021-Jul-09 01:36
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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