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78491 (2002 RQ61)
Classification: Main-belt Asteroid          SPK-ID: 2078491
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09447865892188759 5.0694e-08  
a 3.19496491350996 2.3665e-08 au
q 2.893108913179054 1.6101e-07 au
i 5.718644788762099 4.1248e-06 deg
node 108.0623002379214 5.034e-05 deg
peri 243.231858680952 5.5059e-05 deg
M 86.66575386971913 2.1003e-05 deg
tp 2458698.339457303373
(2019-Aug-02.83945730)
0.00012227 TDB
period 2085.91960836735
5.71
2.3176e-05
6.345e-08
d
yr
n .1725857499761327 1.9175e-09 deg/d
Q 3.496820913840865 2.5901e-08 au
  Orbit Determination Parameters
   # obs. used (total)      973  
   data-arc span      10669 days (29.21 yr)  
   first obs. used      1991-11-03  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55427  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 07:15:20  

Additional Information
 Earth MOID = 1.89108 au 
 Jupiter MOID = 1.9044 au 
 T_jup = 3.181 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457118.5 (2015-Apr-06.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09721330616260554 5.2128e-08  
q 2.881518209166142 1.6609e-07 au
tp 2456590.787702775810
(2013-Oct-25.28770278)
0.00011979 TDB
node 108.4691639634451 5.0297e-05 deg
peri 239.3287675130663 5.4519e-05 deg
i 5.723216677471567 4.1339e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      973  
   data-arc span      10669 days (29.21 yr)  
   first obs. used      1991-11-03  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55427  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 07:15:20  

Additional Information
 Jupiter MOID = 1.9044 au 
 T_jup = 3.181 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.717360710761252E-15 -8.589302495752942E-15 -6.858439266422631E-14 6.269135761608449E-15 -1.001442373725315E-13 -1.82573438025896E-15
q -8.589302495752942E-15 2.758454092986467E-14 -4.119364001993997E-13 -1.82893842339225E-14 2.242050600375284E-13 6.964805117464078E-15
tp -6.858439266422631E-14 -4.119364001993997E-13 1.435062514801135E-8 -2.286895349686405E-11 2.554931600211708E-9 1.922801078640472E-16
node 6.269135761608449E-15 -1.82893842339225E-14 -2.286895349686405E-11 2.529788741319027E-9 -2.520909826304038E-9 4.074172668307433E-11
peri -1.001442373725315E-13 2.242050600375284E-13 2.554931600211708E-9 -2.520909826304038E-9 2.972372731912897E-9 -4.051146959713099E-11
i -1.82573438025896E-15 6.964805117464078E-15 1.922801078640472E-16 4.074172668307433E-11 -4.051146959713099E-11 1.708874141683836E-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 14.3   n/a MPO453206  

78491 (2002 RQ61)          Discovered 2002-Sep-05 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ 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
1907-Nov-02 05:20 00:03 Jupiter 1.90522744876533 1.90522701338512 1.90522788414554 3.08144279974603 2.93362121033697 2417881.722042402 3.07354222937921 121.920186142316 14.8661922667329 -86.6955685956934 3029536.71677617 T 30 CATAB v2.0f-lin.ifort 2021-Feb-24 07:15:22 2021-Feb-24 07:15
1918-Oct-10 16:15 00:03 Jupiter 1.94739828195241 1.94739783249954 1.9473987314054 3.51764776623341 3.39174647196714 2421877.177105938 2.79177078001192 62.9718563029659 15.2520183272769 84.6840340059484 3006157.95281387 T 30 CATAB v2.0f-lin.ifort 2021-Feb-24 07:15:22 2021-Feb-24 07:15
2028-Feb-09 04:24 < 00:01 Jupiter 1.95327738444387 1.95327688771371 1.95327788117392 2.72184634491137 2.55756996684223 2461810.683359835 0.578754659782356 51.1848855067782 14.0188608537029 -86.3837579450441 2759625.08341434 T 30 CATAB v2.0f-lin.ifort 2021-Feb-24 07:15:22 2021-Feb-24 07:15
2039-Jan-27 20:53 < 00:01 Jupiter 1.92013109354345 1.92013061611404 1.92013157097285 2.87942743976163 2.7219198185687 2465816.370474258 0.953976351929531 60.7429511441198 15.1097480545397 -87.8871141685168 2813887.86243636 T 30 CATAB v2.0f-lin.ifort 2021-Feb-24 07:15:22 2021-Feb-24 07:15
2050-Jan-10 08:08 00:01 Jupiter 1.92966355883756 1.92966310942941 1.92966400824582 3.24805639991055 3.10997971066528 2469816.839005730 1.35184740195119 63.9702906675928 15.3317766995318 87.1135332138539 3165910.97915642 T 30 CATAB v2.0f-lin.ifort 2021-Feb-24 07:15:22 2021-Feb-24 07:15
2060-Dec-16 01:05 00:02 Jupiter 1.98806630356414 1.98806580476023 1.98806680236806 3.77562430068051 3.66104246786243 2473809.544917675 1.74144629881186 49.6691622451183 19.1988122686929 83.351465324229 2908754.85486763 T 30 CATAB v2.0f-lin.ifort 2021-Feb-24 07:15:22 2021-Feb-24 07:15
2159-May-04 06:04 00:04 Jupiter 1.98679881121841 1.98679814899918 1.98679947344137 2.73267805705759 2.57194067729051 2509741.753050609 4.4362606112696 221.443622256232 14.0096234388999 -86.3115116136372 2652749.20243945 T 30 CATAB v2.0f-lin.ifort 2021-Feb-24 07:15:22 2021-Feb-24 07:15
2170-Apr-21 11:09 00:05 Jupiter 1.94582619229414 1.94582564260853 1.94582674198141 2.72491148589609 2.56018321802949 2513746.964925565 4.83831209966391 242.500956744961 14.061946276097 -85.4350652721699 2646714.99298695 T 30 CATAB v2.0f-lin.ifort 2021-Feb-24 07:15:22 2021-Feb-24 07:15
2181-Apr-07 09:39 00:05 Jupiter 1.94091196983207 1.94091149473661 1.94091244492852 3.01054788479833 2.86192064438212 2517750.901869703 5.28186642344637 230.013525773266 15.0963880620643 -87.9641987335968 3004112.64070091 T 30 CATAB v2.0f-lin.ifort 2021-Feb-24 07:15:22 2021-Feb-24 07:15
2192-Mar-20 10:53 00:06 Jupiter 1.97209544266489 1.972094726904 1.9720961584296 3.4817928928173 3.35616956050163 2521750.953290803 5.77273769344926 174.488420751619 15.2228885581795 84.933606261103 3299761.72962203 T 30 CATAB v2.0f-lin.ifort 2021-Feb-24 07:15:22 2021-Feb-24 07:15
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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