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18170 Ramjeawan (2000 QW2)
Classification: Main-belt Asteroid          SPK-ID: 2018170
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1933658088343798 4.2891e-08  
a 2.672106232670195 1.2932e-08 au
q 2.155412249698536 1.125e-07 au
i 4.545350874594435 4.8524e-06 deg
node 351.2995144373238 4.9577e-05 deg
peri 43.81548511524667 5.0897e-05 deg
M 145.505808277936 1.1946e-05 deg
tp 2458355.652774035077
(2018-Aug-25.15277403)
5.1611e-05 TDB
period 1595.434602197759
4.37
1.1582e-05
3.171e-08
d
yr
n .2256438461997058 1.638e-09 deg/d
Q 3.188800215641855 1.5433e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1147  
   data-arc span      11916 days (32.62 yr)  
   first obs. used      1987-09-13  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5318  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:45:51  

Additional Information
 Earth MOID = 1.1646 au 
 Jupiter MOID = 2.2675 au 
 T_jup = 3.349 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457030.5 (2015-Jan-08.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1907664445703119 4.2631e-08  
q 2.164753874875409 1.1146e-07 au
tp 2456758.905926503626
(2014-Apr-11.40592650)
5.1352e-05 TDB
node 351.3421627467868 4.9578e-05 deg
peri 43.97395252231646 5.0949e-05 deg
i 4.544543605915836 4.8482e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1147  
   data-arc span      11916 days (32.62 yr)  
   first obs. used      1987-09-13  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5318  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:45:51  

Additional Information
 Jupiter MOID = 2.2675 au 
 T_jup = 3.349 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.817412424864917E-15 -4.731884468850215E-15 -2.057536707652692E-13 -2.656795234230654E-15 -1.152771207222593E-13 -1.209596147380433E-15
q -4.731884468850215E-15 1.242338211390433E-14 5.442481249741264E-13 7.524173624804379E-15 3.038061768198816E-13 3.104688698406553E-15
tp -2.057536707652692E-13 5.442481249741264E-13 2.636983945602843E-9 1.773944308652073E-12 6.103244814331769E-10 -2.178997175330759E-12
node -2.656795234230654E-15 7.524173624804379E-15 1.773944308652073E-12 2.457953669078287E-9 -2.449582028141548E-9 -7.473195589178134E-12
peri -1.152771207222593E-13 3.038061768198816E-13 6.103244814331769E-10 -2.449582028141548E-9 2.59577209357609E-9 6.992310490853254E-12
i -1.209596147380433E-15 3.104688698406553E-15 -2.178997175330759E-12 -7.473195589178134E-12 6.992310490853254E-12 2.350524020116406E-11

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 14.5   n/a MPO467905  

18170 Ramjeawan           Discovered 2000 Aug. 24 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Khaivchandra Ramjeawan (b. 1986) was awarded second place in the 2003 Intel International Science and Engineering Fair for her environmental science project. She attends the Uniondale High School, Uniondale, New York, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040614/MPCPages.arcLast Updated: 2009-12-11

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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
2061-Dec-27 00:52 < 00:01 Juno 0.0442394218420442 0.0442300390112392 0.0442488047953258 6.54232821796715 6.54232817593281 2474185.535965837 0.783290117857582 481.974085256775 37.1561766009531 14.0156070940405 45128.3254692855 T 24 CATAB v2.0f-lin.ifort 2020-May-20 04:46:07 2020-May-20 04:46
2066-May-12 07:09 < 00:01 Juno 0.0143519476027887 0.0143439574986545 0.0143599409362198 6.66379886971094 6.66379874250328 2475782.797737114 0.714444255281739 524.307669924332 37.4529017605874 -40.6777297519603 37477.8197505328 T 24 CATAB v2.0f-lin.ifort 2020-May-20 04:46:07 2020-May-20 04:46

Alternate Designations
 2000 QW2 = 1987 RP1 = 1998 FD147 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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