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 ]  
22681 (1998 QL44)
Classification: Main-belt Asteroid          SPK-ID: 2022681
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04756208268994008 5.127e-08  
a 2.899287774570304 1.4702e-08 au
q 2.761391609694259 1.4722e-07 au
i 3.138007598812322 4.8012e-06 deg
node 126.3355823248429 0.0001006 deg
peri 193.5927126332222 0.00011537 deg
M 206.5581058418157 5.8254e-05 deg
tp 2459969.058382141278
(2023-Jan-24.55838214)
0.00029286 TDB
period 1803.164768584177
4.94
1.3715e-05
3.755e-08
d
yr
n .1996489762178903 1.5186e-09 deg/d
Q 3.037183939446349 1.5401e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1512  
   data-arc span      9162 days (25.08 yr)  
   first obs. used      1996-02-15  
   last obs. used      2021-03-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51961  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:09:17  

Additional Information
 Earth MOID = 1.74629 au 
 Jupiter MOID = 2.11094 au 
 T_jup = 3.284 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.92   n/a E2021B10  
diameter diameter 4.641 km 0.809 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.272   0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22681 (1998 QL44)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 QL44 = 1999 XO71 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-20 05:34 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin