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117180 (2004 RH78)
Classification: Main-belt Asteroid          SPK-ID: 2117180
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03534403293060419 5.3954e-08  
a 2.715223941736275 2.1744e-08 au
q 2.619256977325583 1.4967e-07 au
i 6.698767587585101 5.0203e-06 deg
node 42.40365890342907 4.9164e-05 deg
peri 343.3632247806941 9.2084e-05 deg
M 250.9965042786056 8.1089e-05 deg
tp 2459891.317252649823
(2022-Nov-07.81725265)
0.00037045 TDB
period 1634.206405721477
4.47
1.963e-05
5.374e-08
d
yr
n .2202904105256309 2.6462e-09 deg/d
Q 2.811190906146967 2.2512e-08 au
  Orbit Determination Parameters
   # obs. used (total)      451  
   data-arc span      8065 days (22.08 yr)  
   first obs. used      1998-04-22  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55519  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:51:30  

Additional Information
 Earth MOID = 1.62347 au 
 Jupiter MOID = 2.33454 au 
 T_jup = 3.350 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457339.5 (2015-Nov-13.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03409202480433667 5.3393e-08  
q 2.623931116077673 1.4743e-07 au
tp 2456630.502008849401
(2013-Dec-04.00200885)
0.00037332 TDB
node 42.42791863791827 4.9171e-05 deg
peri 345.171402453743 9.5182e-05 deg
i 6.697686855988066 5.0191e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      451  
   data-arc span      8065 days (22.08 yr)  
   first obs. used      1998-04-22  
   last obs. used      2020-05-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55519  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:51:30  

Additional Information
 Jupiter MOID = 2.33454 au 
 T_jup = 3.350 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.850825170927848E-15 -7.790619544843503E-15 -4.079579725516788E-12 1.665580331422549E-14 -1.017943193189077E-12 1.643618880232315E-15
q -7.790619544843503E-15 2.173616166671028E-14 1.330674636174298E-11 -4.463646142864198E-14 3.281990557505568E-12 -4.749345720705026E-15
tp -4.079579725516788E-12 1.330674636174298E-11 1.393654853832717E-7 1.126200209037221E-10 3.045444611726861E-8 -3.273492991936804E-11
node 1.665580331422549E-14 -4.463646142864198E-14 1.126200209037221E-10 2.417799475063542E-9 -2.376815839453845E-9 -8.751086283147776E-11
peri -1.017943193189077E-12 3.281990557505568E-12 3.045444611726861E-8 -2.376815839453845E-9 9.059621810372176E-9 7.971316257111218E-11
i 1.643618880232315E-15 -4.749345720705026E-15 -3.273492991936804E-11 -8.751086283147776E-11 7.971316257111218E-11 2.519100446283342E-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 15.71   n/a E2021B55  

117180 (2004 RH78)          Discovered 2004-Sep-08 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
1921-Jul-23 10:16 00:05 Hebe 0.0178619630481471 0.0178422292421355 0.0178817177300146 5.48617809598927 5.48617803254996 2422893.928118553 5.16659426634018 1378.24083917742 66.0887860614841 -44.4926539344545 28358.4405606077 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 16:51:32 2021-Apr-13 16:51
2042-May-30 01:55 00:02 Hebe 0.0401961286218573 0.0401849475441106 0.0402073097077309 5.5802005962865 5.58020056857094 2467034.579570710 1.9910929829161 558.127341114972 65.7699728947882 2.98106580587531 11758.8325471818 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 16:51:32 2021-Apr-13 16:51
2128-Jul-08 08:46 00:06 Hygie 0.0348098425574747 0.0347966194320078 0.0348231052880194 3.11348860248406 3.11348824598933 2498484.865328745 6.30769135797941 1965.88935029056 54.0653174797199 70.4944278610897 90526.2440243935 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 16:51:32 2021-Apr-13 16:51
2150-Dec-09 09:52 00:11 Hygie 0.04139603397386 0.0413497448958772 0.0414423231771566 3.22786297538335 3.22786268622973 2506673.911336479 11.2561339692268 2305.00301041052 52.3990947969475 2.87504577101638 6485.71047455426 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 16:51:32 2021-Apr-13 16:51

Alternate Designations
 2004 RH78 = 2000 WO79 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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