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 ]  
22559 (1998 HQ12)
Classification: Main-belt Asteroid          SPK-ID: 2022559
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1136499381979109 4.4314e-08  
a 2.403273852800663 9.4337e-09 au
q 2.130141927957213 1.0752e-07 au
i 13.00531517493774 4.7308e-06 deg
node 146.2423345709076 1.4853e-05 deg
peri 4.351115353294359 2.251e-05 deg
M 96.92981099171585 1.5017e-05 deg
tp 2458834.097705940976
(2019-Dec-16.59770594)
5.6918e-05 TDB
period 1360.828258217916
3.73
8.0126e-06
2.194e-08
d
yr
n .2645447710436591 1.5577e-09 deg/d
Q 2.676405777644114 1.0506e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1318  
   data-arc span      11092 days (30.37 yr)  
   first obs. used      1990-02-24  
   last obs. used      2020-07-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49456  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:07:36  

Additional Information
 Earth MOID = 1.14147 au 
 Jupiter MOID = 2.32139 au 
 T_jup = 3.481 
[ 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 14.84   n/a E2021B10  
diameter diameter 3.079 km 0.866 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 19.3038 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.204   0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22559 (1998 HQ12)          Discovered 1998-Apr-19 by Spacewatch at Kitt Peak
Reference: 20010309/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 HQ12 = 1990 DK2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Apr-22 03:05 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin