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
JPL Small-Body Database Browser
Search: [ help ]  
22011 (1999 XR81)
Classification: Main-belt Asteroid          SPK-ID: 2022011
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1784405908197861 4.1985e-08  
a 3.110874547678968 2.2984e-08 au
q 2.555768255424898 1.3422e-07 au
i 18.52574655131819 4.9796e-06 deg
node 84.96404539756293 1.8804e-05 deg
peri 24.3280280228342 2.5526e-05 deg
M 273.1385425847067 1.7671e-05 deg
tp 2459684.056009039054
(2022-Apr-14.55600904)
0.00010074 TDB
period 2004.112853204438
5.49
2.221e-05
6.081e-08
d
yr
n .1796306028497272 1.9907e-09 deg/d
Q 3.665980839933038 2.7085e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1038  
   data-arc span      11244 days (30.78 yr)  
   first obs. used      1990-04-30  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49818  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:57:38  

Additional Information
 Earth MOID = 1.58252 au 
 Jupiter MOID = 1.59352 au 
 T_jup = 3.115 
[ 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 13.69   n/a E2021B10  

22011 (1999 XR81)          Discovered 1999-Dec-07 by LINEAR at Socorro
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
1926-Sep-30 15:53 00:04 Jupiter 1.95099385157489 1.95099121086394 1.95099649228973 2.64594156445338 2.47643054999446 2424789.161493445 4.39062400790108 216.743471650276 100.182099875295 -12.2032177132008 736092.533939492 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 03:57:41 2021-Apr-13 03:57
1936-Nov-12 01:15 00:02 Jupiter 1.61823985802771 1.61823890932112 1.61824080674865 4.29746349186469 4.17388886484505 2428484.551811135 2.39786724962733 348.088981085653 32.6218008164422 -84.8181567189568 3056815.65014267 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 03:57:41 2021-Apr-13 03:57
2008-May-17 03:20 < 00:01 Jupiter 1.59161766811042 1.59161714798469 1.59161818823959 4.15286182223328 4.0226741191733 2454603.638831269 0.425716975697272 158.880280009618 13.4170316513993 82.3360962651838 2912333.02821457 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 03:57:41 2021-Apr-13 03:57
2079-Nov-23 16:10 00:02 Jupiter 1.63171060401223 1.63170963861913 1.63171156945004 3.90895781489386 3.7738242295069 2480726.173432551 2.02153267792632 499.74631051456 21.278471250146 84.6926960111224 2546824.52573575 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 03:57:41 2021-Apr-13 03:57
2090-Mar-16 16:26 00:02 Jupiter 1.93680488131998 1.93680271331383 1.93680704932623 4.48458557445902 4.38598314568792 2484492.184772277 2.37595999971262 186.692630522264 105.911376980762 82.8114951199917 2100505.86899793 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 03:57:41 2021-Apr-13 03:57
2151-Jun-21 08:43 00:05 Jupiter 1.73489942589049 1.73489662473736 1.73490222715731 3.44677224108481 3.3020883473455 2506867.863312484 4.95415582744537 747.398139904707 34.4415191562177 77.3590962839611 1814098.60902843 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 03:57:41 2021-Apr-13 03:57
2161-Sep-28 02:21 00:04 Jupiter 1.78828618981235 1.7882828647204 1.78828951491832 4.42971547840187 4.32146715510007 2510619.598256466 4.48904934492416 342.047496503733 88.3221680014357 -65.4170183263813 2210872.72820616 T 25 CATAB v2.0f-lin.ifort 2021-Apr-13 03:57:41 2021-Apr-13 03:57

Alternate Designations
 1999 XR81 = 1990 HL3 = 1996 LZ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-May-13 07:09 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin