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109686 (2001 RF31)
Classification: Main-belt Asteroid          SPK-ID: 2109686
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07250457134820167 3.6238e-08  
a 3.006443020123712 1.7104e-08 au
q 2.788462157666849 1.0704e-07 au
i .640864653546544 3.776e-06 deg
node 93.83824934060517 0.00043836 deg
peri 354.1881503495028 0.00043971 deg
M 116.0687069878268 3.4463e-05 deg
tp 2458386.610029095162
(2018-Sep-25.11002910)
0.00018111 TDB
period 1904.048001059578
5.21
1.6249e-05
4.449e-08
d
yr
n .1890708636545216 1.6135e-09 deg/d
Q 3.224423882580575 1.8344e-08 au
  Orbit Determination Parameters
   # obs. used (total)      869  
   data-arc span      6867 days (18.80 yr)  
   first obs. used      2001-08-23  
   last obs. used      2020-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53824  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:10:36  

Additional Information
 Earth MOID = 1.80486 au 
 Jupiter MOID = 1.91512 au 
 T_jup = 3.247 
[ 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 15.0   n/a MPO469122  
rotation period rot_per 3.70 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]

109686 (2001 RF31)          Discovered 2001-Sep-07 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
1938-Nov-15 05:28 00:02 Jupiter 1.93032818690653 1.93032774433206 1.93032862948132 3.23322540487351 3.09453586335188 2429217.727798793 1.95350065152538 92.0762618314594 13.1801408861972 86.674731824211 3408130.70480898 T 20 CATAB v2.0f-lin.ifort 2020-Nov-12 19:10:38 2020-Nov-12 19:10
1985-Jun-08 21:45 < 00:01 Jupiter 1.936920901495 1.93692058726016 1.93692121572984 3.01295125786523 2.8641347818386 2446225.406596638 0.769513776155343 46.8770725422971 9.39461970040689 -89.6150876311466 3999071.72001948 T 20 CATAB v2.0f-lin.ifort 2020-Nov-12 19:10:38 2020-Nov-12 19:10
2022-Nov-08 12:14 < 00:01 Jupiter 1.99090957466637 1.99090913711685 1.9909100122159 3.70353020963322 3.58681558236384 2459892.009755739 0.309738030398667 37.1541263834223 17.2307882879229 89.0854687789833 3366457.99815457 T 20 CATAB v2.0f-lin.ifort 2020-Nov-12 19:10:38 2020-Nov-12 19:10
2069-Jun-04 12:08 00:01 Jupiter 1.92090417507865 1.92090379529293 1.92090455486426 3.20584266395857 3.06521245163667 2476902.005496151 1.47875306199907 77.2866049171463 12.8511688546044 -88.593090161591 3536771.14618506 T 20 CATAB v2.0f-lin.ifort 2020-Nov-12 19:10:38 2020-Nov-12 19:10
2115-Dec-28 17:10 00:03 Jupiter 1.93130194728207 1.93130145796815 1.93130243659654 3.00393459749852 2.85420238227982 2493909.215174966 2.68587489763873 85.441358689408 12.3567788788417 -78.9417815349876 4150956.74298553 T 20 CATAB v2.0f-lin.ifort 2020-Nov-12 19:10:38 2020-Nov-12 19:10
2153-May-30 09:09 00:04 Jupiter 1.98750389619192 1.98750308749003 1.98750470489765 3.6837520307063 3.56618577659501 2507576.881518567 3.60305730057737 175.039680665156 17.4779846445075 81.4530648527643 3250037.40796571 T 20 CATAB v2.0f-lin.ifort 2020-Nov-12 19:10:38 2020-Nov-12 19:10
2199-Dec-25 23:39 00:05 Jupiter 1.91415812720216 1.91415767893859 1.91415857546868 3.1861650905386 3.04411565176241 2524587.485122302 4.88747286906689 227.535077859822 12.597663238536 89.3995557966212 3509103.51979998 T 20 CATAB v2.0f-lin.ifort 2020-Nov-12 19:10:38 2020-Nov-12 19:10

Alternate Designations
 2001 RF31 = 2002 VG34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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