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102117 (1999 RW170)
Classification: Main-belt Asteroid          SPK-ID: 2102117
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2301903014448027 5.4669e-08  
a 2.594835410468155 1.0538e-08 au
q 1.997529465132842 1.4353e-07 au
i 4.371062456792374 4.5916e-06 deg
node 158.4720437698923 6.7264e-05 deg
peri 226.7028271367935 6.7809e-05 deg
M 9.921475814697047 7.2525e-06 deg
tp 2459158.423759575387
(2020-Nov-04.92375958)
3.0782e-05 TDB
period 1526.733203383122
4.18
9.3008e-06
2.546e-08
d
yr
n .235797583495445 1.4365e-09 deg/d
Q 3.192141355803468 1.2964e-08 au
  Orbit Determination Parameters
   # obs. used (total)      545  
   data-arc span      9215 days (25.23 yr)  
   first obs. used      1995-10-21  
   last obs. used      2021-01-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5025  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:40:26  

Additional Information
 Earth MOID = 1.003 au 
 Jupiter MOID = 2.26816 au 
 T_jup = 3.376 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458077.5 (2017-Nov-20.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2328717858130858 5.4946e-08  
q 1.989360098721622 1.4458e-07 au
tp 2457630.772470649536
(2016-Aug-30.27247065)
3.208e-05 TDB
node 158.6549827523269 6.7312e-05 deg
peri 226.3691708527049 6.7825e-05 deg
i 4.371482881322623 4.5995e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      545  
   data-arc span      9215 days (25.23 yr)  
   first obs. used      1995-10-21  
   last obs. used      2021-01-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5025  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:40:26  

Additional Information
 Jupiter MOID = 2.26816 au 
 T_jup = 3.376 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.019024076321325E-15 -7.931892291319244E-15 2.877161811274102E-13 5.555083353338792E-14 4.031590443806827E-14 -4.244363234472171E-15
q -7.931892291319244E-15 2.090225312598334E-14 -8.455559989293247E-13 -1.443996498688103E-13 -1.262764008192559E-13 1.150816402498671E-14
tp 2.877161811274102E-13 -8.455559989293247E-13 1.029155423673232E-9 1.387122584097375E-12 2.976783412879233E-10 -4.83599910755131E-13
node 5.555083353338792E-14 -1.443996498688103E-13 1.387122584097375E-12 4.530865249485046E-9 -4.516744320424484E-9 1.516573933963247E-10
peri 4.031590443806827E-14 -1.262764008192559E-13 2.976783412879233E-10 -4.516744320424484E-9 4.600179385400376E-9 -1.51406963291158E-10
i -4.244363234472171E-15 1.150816402498671E-14 -4.83599910755131E-13 1.516573933963247E-10 -1.51406963291158E-10 2.11555883633948E-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 16.49   n/a E2021B55  

102117 (1999 RW170)          Discovered 1999-Sep-09 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ hide close-approach data ]
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
2042-Aug-05 06:10 00:01 Eunom 0.0390529710217162 0.0390448150823425 0.0390611281768935 4.95353960388392 4.95353953131943 2467101.756648036 1.37147399279479 534.033187843554 53.2272781359478 -40.6804873978779 71974.9625505059 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 15:40:27 2021-Apr-13 15:40
2077-Sep-24 19:13 00:14 Cybel 0.0429964548639997 0.0429901643539684 0.0430027460695044 2.63153600531207 2.63153595155024 2479936.300603707 14.4544829457536 431.82680487128 124.967111621593 -45.947972617184 38371.6822609405 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 15:40:27 2021-Apr-13 15:40
2193-Jan-15 12:05 00:07 Eunom 0.0414529907197633 0.0414481312691826 0.0414579306626051 4.98898844422673 4.98898837634928 2522052.003514862 6.55878539541852 2952.76005004574 50.67883626396 -85.3587510894519 121880.129065539 T 16 CATAB v2.0f-lin.ifort 2021-Apr-13 15:40:27 2021-Apr-13 15:40

Alternate Designations
 1999 RW170 = 1995 UN32 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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