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 ]  
173740 (2001 QX287)
Classification: Main-belt Asteroid          SPK-ID: 2173740
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1196479438264998 5.2223e-08  
a 2.98372761151122 2.371e-08 au
q 2.626730737855549 1.6287e-07 au
i 10.89170996494548 5.8788e-06 deg
node 329.9884318524263 2.1946e-05 deg
peri 345.5583972323445 2.9302e-05 deg
M 253.6543444154725 2.2178e-05 deg
tp 2459556.601976824363
(2021-Dec-08.10197682)		 0.00011972 TDB
period 1882.509544526215
5.15		 2.2439e-05
6.143e-08		 d
yr
n .1912340901785993 2.2795e-09 deg/d
Q 3.340724485166891 2.6547e-08 au
   Orbit Determination Parameters
   # obs. used (total)      606  
   data-arc span      6874 days (18.82 yr)  
   first obs. used      2001-07-22  
   last obs. used      2020-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57609  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:18:00  

Additional Information
 Earth MOID = 1.61503 au 
 Jupiter MOID = 1.9807 au 
 T_jup = 3.220 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457217.5 (2015-Jul-14.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1182815825282988 5.2227e-08  
q 2.631520236341768 1.6269e-07 au
tp 2457673.102261529237
(2016-Oct-11.60226153)		 0.00010935 TDB
node 330.0132619877253 2.195e-05 deg
peri 345.5654900034556 2.9449e-05 deg
i 10.88909471477989 5.8773e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      606  
   data-arc span      6874 days (18.82 yr)  
   first obs. used      2001-07-22  
   last obs. used      2020-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57609  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 10:18:00  

Additional Information
 Jupiter MOID = 1.9807 au 
 T_jup = 3.220 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.727683800068044E-15 -8.432355000229064E-15 1.400409454667248E-13 -5.358073598691499E-15 7.250511600896234E-14 2.065084380256632E-15
q -8.432355000229064E-15 2.646944877596201E-14 5.824590856577954E-13 1.83935179954164E-14 -6.643236923551735E-14 -5.192828682955761E-15
tp 1.400409454667248E-13 5.824590856577954E-13 1.195779412267744E-8 -1.517068424929855E-11 2.158231941526493E-9 -3.629850167499731E-12
node -5.358073598691499E-15 1.83935179954164E-14 -1.517068424929855E-11 4.817950295464042E-10 -4.75353194405338E-10 3.792308710929604E-12
peri 7.250511600896234E-14 -6.643236923551735E-14 2.158231941526493E-9 -4.75353194405338E-10 8.672336895270829E-10 -4.398795828898378E-12
i 2.065084380256632E-15 -5.192828682955761E-15 -3.629850167499731E-12 3.792308710929604E-12 -4.398795828898378E-12 3.454298646337095E-11

[ 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 14.93   n/a E2021B55  
diameter diameter 3.828 km 0.954 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.159   0.084 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173740 (2001 QX287)          Discovered 2001-Aug-17 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Feb-25 05:51 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin