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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
173721 (2001 QM188)
Classification: Main-belt Asteroid          SPK-ID: 2173721
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09755009027259684 3.8846e-08  
a 2.744199316431831 2.0506e-08 au
q 2.476502425387907 1.1139e-07 au
i 4.457421034852321 4.1684e-06 deg
node 149.4071101296651 6.3153e-05 deg
peri 187.5008374189862 6.889e-05 deg
M 310.8175509081076 2.6054e-05 deg
tp 2458827.345179528731
(2019-Dec-09.84517953)
0.00011999 TDB
period 1660.435097035567
4.55
1.8612e-05
5.096e-08
d
yr
n .2168106423688109 2.4302e-09 deg/d
Q 3.011896207475754 2.2507e-08 au
  Orbit Determination Parameters
   # obs. used (total)      419  
   data-arc span      7470 days (20.45 yr)  
   first obs. used      1999-03-10  
   last obs. used      2019-08-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53914  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 03:46:14  

Additional Information
 Earth MOID = 1.46607 au 
 Jupiter MOID = 2.31729 au 
 T_jup = 3.337 
[ 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 16.0   n/a MPO439994  
diameter diameter 3.282 km 0.955 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.060   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

173721 (2001 QM188)          Discovered 2001-Aug-22 by Spacewatch at Kitt Peak
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 2019-Dec-07 02:19 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin