Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
21704 Mikkilineni (1999 RD85)
Classification: Main-belt Asteroid          SPK-ID: 2021704
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03013734338721615 3.6457e-08  
a 2.980131428695348 1.5014e-08 au
q 2.890318184489721 1.163e-07 au
i .3218494870608475 3.3568e-06 deg
node 307.1403927900386 0.00070116 deg
peri 157.7656191789594 0.00070445 deg
M 338.4618632288237 6.7952e-05 deg
tp 2459508.923521030451
(2021-Oct-21.42352103)
0.00035477 TDB
period 1879.10718559114
5.14
1.4201e-05
3.888e-08
d
yr
n .1915803434527068 1.4478e-09 deg/d
Q 3.069944672900975 1.5467e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1362  
   data-arc span      10956 days (30.00 yr)  
   first obs. used      1991-01-12  
   last obs. used      2021-01-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52504  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 18:36:21  

Additional Information
 Earth MOID = 1.90744 au 
 Jupiter MOID = 1.95744 au 
 T_jup = 3.259 
[ 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 14.66   n/a E2021B10  

21704 Mikkilineni           Discovered 1999 Sept. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Sohan Venkat Mikkilineni (b. 1989) was awarded second place in the 2005 Intel International Science and Engineering Fair for his biochemistry team project. He attends the Detroit Country Day School, Beverly Hills, Michigan, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050822/MPCPages.arcLast Updated: 2005-08-26

[ 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
1927-Aug-18 08:41 00:02 Jupiter 1.97810336400284 1.97810302441971 1.97810370358609 3.54353212032666 3.42055861696001 2425110.862113470 1.98746811038127 105.291059671892 12.5820945854215 88.9749564177485 4253832.13617731 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 18:36:25 2021-Jul-08 18:36
2045-Oct-27 10:03 < 00:01 Jupiter 1.9804876202216 1.98048729807048 1.98048794237273 3.48245619901612 3.35739981798601 2468280.918818255 0.696157566779089 42.2793231840832 11.941018769883 -87.8447584148888 4327567.72647842 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 18:36:25 2021-Jul-08 18:36
2082-Mar-30 21:16 00:02 Jupiter 1.98276699670636 1.98276665556658 1.98276733784614 3.60292843988974 3.48234246276545 2481584.386183156 1.50217204679765 75.4427527914547 12.8875223192464 88.6639143273681 4260849.2693102 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 18:36:25 2021-Jul-08 18:36
2164-Jan-07 20:20 00:03 Jupiter 1.99856127187438 1.99856082305142 1.99856172069893 3.4817546331146 3.35782415529663 2511451.347202055 3.3492694484699 130.26741597577 11.792938254842 -82.8859122635734 4523226.6651022 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 18:36:25 2021-Jul-08 18:36
2200-Jun-11 05:48 00:04 Jupiter 1.96677450776895 1.96677417565606 1.96677483988184 3.48792636822807 3.36218660338099 2524754.741616038 4.1776992629137 206.74754162378 12.2486551625542 -89.7293547425452 4234102.26601654 T 30 CATAB v2.0g-lin.ifort 2021-Jul-08 18:36:25 2021-Jul-08 18:36

Alternate Designations
 1999 RD85 = 1992 JU = 1997 EX56 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-17 23:29 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin