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181981 (1999 VC71)
Classification: Main-belt Asteroid          SPK-ID: 2181981
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2547451292632872 4.536e-08  
a 3.055637370495258 1.4034e-08 au
q 2.277228633566713 1.4075e-07 au
i 2.327069132114621 3.5157e-06 deg
node 93.21476278613211 0.00012645 deg
peri 265.9492360004297 0.00012679 deg
M 19.81854488741466 7.1731e-06 deg
tp 2459093.096011357340
(2020-Aug-31.59601136)
3.8972e-05 TDB
period 1950.972492229306
5.34
1.3441e-05
3.68e-08
d
yr
n .184523360238996 1.2713e-09 deg/d
Q 3.834046107423804 1.761e-08 au
  Orbit Determination Parameters
   # obs. used (total)      675  
   data-arc span      7771 days (21.28 yr)  
   first obs. used      1999-11-04  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49376  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:32:51  

Additional Information
 Earth MOID = 1.27361 au 
 Jupiter MOID = 1.62184 au 
 T_jup = 3.184 
[ 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 15.79   n/a E2021B55  

181981 (1999 VC71)          Discovered 1999-Nov-04 by LINEAR at Socorro
Reference: 20080420/Numbers.arcLast Updated: 2008-04-23

[ 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
1922-Feb-27 12:36 00:02 Jupiter 1.66213526526173 1.66213451203165 1.6621360184933 0.831318009702398 n/a 2423113.024830600 2.18262450410814 111.772708864689 25.0517600203566 75.1127477569234 9606513.45917776 F 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:53 2021-Apr-13 21:32
1931-Jul-24 11:32 00:02 Jupiter 1.92082776549075 1.92082676734308 1.92082876363754 2.15553077129164 1.94020050946442 2426546.980378413 1.95646708766099 64.5957370970641 16.3742506309191 -79.091577142108 1103571.2043175 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:53 2021-Apr-13 21:32
1970-Nov-13 12:24 00:01 Jupiter 1.96316298691034 1.96316228889404 1.96316368492608 2.0220045233806 1.7959916912148 2440904.016978048 1.08619740132578 54.8374232930326 16.5881514045771 88.4667702565319 1522064.63833896 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:53 2021-Apr-13 21:32
1980-Apr-12 17:21 < 00:01 Jupiter 1.64332488626842 1.64332442200757 1.6433253505293 0.847712460662336 n/a 2444342.223213010 0.831879280124953 48.6560274403224 22.2776981085502 -81.628199790073 10939110.9747052 F 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:53 2021-Apr-13 21:32
2028-Dec-13 16:39 < 00:01 Jupiter 1.64941430564248 1.64941381068686 1.64941480059816 0.799648680662215 n/a 2462119.193463207 0.455993713301396 60.9447050116144 23.8496377843411 83.4952040329469 10286641.7492175 F 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:53 2021-Apr-13 21:32
2038-May-10 00:16 < 00:01 Jupiter 1.9525202956011 1.95251951776068 1.95252107344108 2.28023321842708 2.081308207946 2465553.511173930 0.684501058853398 52.2227429854847 7.62676811435327 -89.8744449323768 1485541.62521419 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:53 2021-Apr-13 21:32
2077-Aug-28 21:51 00:02 Jupiter 1.93753157347802 1.93753045242019 1.93753269453408 1.91720309057823 1.67371924786671 2479909.410417845 1.5385229661924 60.2828000510568 44.0517517879461 -74.5852200430382 890517.593303765 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:53 2021-Apr-13 21:32
2087-Jan-27 02:44 00:02 Jupiter 1.66253305329773 1.66253227760997 1.6625338289863 0.901969300507711 n/a 2483347.613676860 1.78635277346503 84.4062385657089 24.404471825064 -68.1977165340704 9522411.2512963 F 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:53 2021-Apr-13 21:32
2135-Sep-30 12:53 00:03 Jupiter 1.64194708412334 1.64194619727023 1.64194797097988 0.780645258382871 n/a 2501125.036905548 2.88626177070743 150.31165126725 25.1402504103599 75.7881267115624 9477073.00295752 F 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:53 2021-Apr-13 21:32
2145-Feb-24 05:48 00:03 Jupiter 1.98262004918333 1.98261802564237 1.98262207272193 2.40708854923224 2.22252731000877 2504559.741491023 3.16009571720863 80.1012584470997 12.0374714242149 82.5132345186349 810692.163135266 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:53 2021-Apr-13 21:32
2184-Jun-13 17:05 00:04 Jupiter 1.9114460462003 1.91144361552448 1.91144847686677 1.81202551277211 1.54828061913872 2518914.212034083 4.10220071339765 151.158518769328 60.8556046954213 -18.8205407432606 454804.360840669 T 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:53 2021-Apr-13 21:32
2193-Nov-12 21:47 00:04 Jupiter 1.6811230784183 1.68112147165379 1.68112468518854 0.956569575259065 n/a 2522353.407745324 4.34841866216051 181.403003747146 24.7438754761896 -64.908906320529 9220577.01897472 F 20 CATAB v2.0f-lin.ifort 2021-Apr-13 21:32:53 2021-Apr-13 21:32

Alternate Designations
 1999 VC71 = 2004 RC69 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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