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 ]  
21213 (1994 RL7)
Classification: Main-belt Asteroid          SPK-ID: 2021213
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2046493900217488 4.0249e-08  
a 2.765266811709723 1.1511e-08 au
q 2.199356645445942 1.1038e-07 au
i 1.873914162077119 4.8819e-06 deg
node 322.5285004804703 0.00012914 deg
peri 170.9937978847316 0.00012963 deg
M 191.9943275274104 1.0651e-05 deg
tp 2460180.336410707538
(2023-Aug-23.83641071)
5.0849e-05 TDB
period 1679.592740541259
4.60
1.0487e-05
2.871e-08
d
yr
n .2143376732409476 1.3383e-09 deg/d
Q 3.331176977973504 1.3866e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1371  
   data-arc span      9826 days (26.90 yr)  
   first obs. used      1994-09-12  
   last obs. used      2021-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52431  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 22:41:21  

Additional Information
 Earth MOID = 1.21427 au 
 Jupiter MOID = 1.71658 au 
 T_jup = 3.308 
[ 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 14.37   n/a E2021B10  
diameter diameter 3.245 km 0.129 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.292   0.116 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21213 (1994 RL7)          Discovered 1994-Sep-12 by Spacewatch at Kitt Peak
Reference: 20010208/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
1901-Dec-20 16:06 00:02 Jupiter 1.86674604923108 1.86674500405964 1.86674709440219 1.62789544476239 1.3200598668542 2415739.170698829 1.95305112918101 128.378733179693 45.4873292457306 56.1989385850271 2142667.04087492 T 26 CATAB v2.0g-lin.ifort 2021-Aug-24 22:41:25 2021-Aug-24 22:41
1939-Jul-28 04:24 00:01 Jupiter 1.88784188782118 1.88784106201075 1.88784271363087 2.00819643756177 1.77073661894755 2429472.683382971 1.33092776887804 69.0021546828427 24.3304465571236 -84.945245607166 1235523.28649024 T 26 CATAB v2.0g-lin.ifort 2021-Aug-24 22:41:25 2021-Aug-24 22:41
1961-Sep-30 06:57 < 00:01 Jupiter 1.76387086206734 1.76387045213939 1.7638712720001 1.40042070690697 1.00038235879599 2437572.789723371 0.896187725589268 282.618528296152 83.7214141637118 49.730182158599 3482506.45480588 T 26 CATAB v2.0g-lin.ifort 2021-Aug-24 22:41:25 2021-Aug-24 22:41
2021-Jul-08 06:19 < 00:01 Jupiter 1.71787900152858 1.71787864416221 1.7178793589094 1.31820968409879 0.866920321943724 2459403.763304848 0.256989549981975 460.450328726127 134.084896215431 48.6283202845507 3141117.03152141 T 26 CATAB v2.0g-lin.ifort 2021-Aug-24 22:41:25 2021-Aug-24 22:41
2081-Apr-16 07:23 00:01 Jupiter 1.73513278726015 1.73513231135881 1.73513326316712 1.38815685153856 0.975017610651031 2481235.807895742 1.2468942913824 307.074449502664 138.686211625884 47.3766703805569 2001561.34342315 T 26 CATAB v2.0g-lin.ifort 2021-Aug-24 22:41:25 2021-Aug-24 22:41
2103-Jun-23 05:13 00:02 Jupiter 1.9525125132445 1.95251130510447 1.95251372138319 1.89342061595694 1.64845943134886 2489337.717367600 1.66780697964988 61.026709738572 25.2026823745353 74.6317378469852 1237369.16663316 T 26 CATAB v2.0g-lin.ifort 2021-Aug-24 22:41:25 2021-Aug-24 22:41
2141-Jan-29 18:19 00:02 Jupiter 1.81405762156496 1.81405645295871 1.81405879016874 1.67790899309483 1.37169077534788 2503073.262927490 2.35709156433717 126.217265908985 88.6198608618301 36.2740297708046 876508.043093643 T 26 CATAB v2.0g-lin.ifort 2021-Aug-24 22:41:25 2021-Aug-24 22:41
2163-Apr-06 19:11 00:03 Jupiter 1.81910080678547 1.81909941646717 1.8191021971094 1.53837450401596 1.19805761501435 2511175.299028360 2.71155558658266 280.061798234044 61.0660545903341 60.6679014593115 3018306.37332429 T 26 CATAB v2.0g-lin.ifort 2021-Aug-24 22:41:25 2021-Aug-24 22:41
2200-Nov-19 05:16 00:03 Jupiter 1.94255949376617 1.94255732249354 1.94256166503583 2.25304062333101 2.05039593982136 2524915.719286902 3.44150321738827 94.3870280252093 8.56377349468534 89.8163618227854 812034.611078019 T 26 CATAB v2.0g-lin.ifort 2021-Aug-24 22:41:25 2021-Aug-24 22:41

Alternate Designations
 1994 RL7 = 1996 AH2 
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-26 01:27 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin