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 ]  
523494 (2017 HQ23)
Classification: Main-belt Asteroid          SPK-ID: 2523494
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1611740169573835 8.6864e-08  
a 2.657456900580093 6.6683e-08 au
q 2.229143897022481 2.5549e-07 au
i 15.40018765360143 9.7454e-06 deg
node 74.46709159779449 3.6832e-05 deg
peri 211.4140936875643 6.252e-05 deg
M 181.4625880072953 6.5292e-05 deg
tp 2459785.237679308484
(2022-Jul-24.73767931)
0.00030756 TDB
period 1582.332584515103
4.33
5.9558e-05
1.631e-07
d
yr
n .2275122205805552 8.5634e-09 deg/d
Q 3.085769904137704 7.7431e-08 au
  Orbit Determination Parameters
   # obs. used (total)      105  
   data-arc span      4790 days (13.11 yr)  
   first obs. used      2006-11-23  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64845  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-30 13:21:30  

Additional Information
 Earth MOID = 1.2261 au 
 Jupiter MOID = 2.07249 au 
 T_jup = 3.318 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457458.5 (2016-Mar-11.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1623918934810991 8.6323e-08  
q 2.224527209787377 2.5394e-07 au
tp 2458202.325044986884
(2018-Mar-24.82504499)
0.00026601 TDB
node 74.53420753186332 3.6872e-05 deg
peri 211.3390265467129 6.2293e-05 deg
i 15.39671681576775 9.7414e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      105  
   data-arc span      4790 days (13.11 yr)  
   first obs. used      2006-11-23  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64845  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-30 13:21:30  

Additional Information
 Jupiter MOID = 2.07249 au 
 T_jup = 3.318 
Orbit Covariance (6×6)
  e q tp node peri i
e 7.451593442396265E-15 -2.14493686914499E-14 -1.248191400107386E-11 -6.229287391679531E-14 -2.199229708883019E-12 -2.025694873470083E-14
q -2.14493686914499E-14 6.44835331462319E-14 4.219384568233397E-11 2.01982590862303E-13 7.313071068629759E-12 8.053020280650632E-14
tp -1.248191400107386E-11 4.219384568233397E-11 7.07607558398535E-8 2.371533159432276E-10 1.340973131531045E-8 1.46306875196483E-10
node -6.229287391679531E-14 2.01982590862303E-13 2.371533159432276E-10 1.359522179298023E-9 -1.265379361936894E-9 -1.161455384274584E-10
peri -2.199229708883019E-12 7.313071068629759E-12 1.340973131531045E-8 -1.265379361936894E-9 3.880366744316975E-9 1.398242121221045E-10
i -2.025694873470083E-14 8.053020280650632E-14 1.46306875196483E-10 -1.161455384274584E-10 1.398242121221045E-10 9.489561624904038E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.5   n/a MPO448252  

523494 (2017 HQ23)          Discovered 2006-Nov-23 by Spacewatch at Kitt Peak
Reference: Last Updated: 2018-05-31
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-20 22:15 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin