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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
79979 (1999 DQ2)
Classification: Main-belt Asteroid          SPK-ID: 2079979
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08564932639705845 2.9851e-08  
a 2.69029558859541 1.2416e-08 au
q 2.459873583623235 8.3098e-08 au
i 10.57670497873969 4.1877e-06 deg
node 19.88955162607816 1.9112e-05 deg
peri 256.7395891305484 3.4235e-05 deg
M 283.0401157494377 2.9172e-05 deg
tp 2459741.056407946223
(2022-Jun-10.55640795)
0.00013061 TDB
period 1611.752773130424
4.41
1.1157e-05
3.055e-08
d
yr
n .223359317881483 1.5462e-09 deg/d
Q 2.920717593567584 1.3479e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2032  
   data-arc span      8169 days (22.37 yr)  
   first obs. used      1999-02-19  
   last obs. used      2021-07-02  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47231  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:02:54  

Additional Information
 Earth MOID = 1.47056 au 
 Jupiter MOID = 2.1956 au 
 T_jup = 3.343 
[ 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 14.07   n/a MPO637112  
rotation period rot_per 725.292 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.]

79979 (1999 DQ2)          Discovered 1999-Feb-19 by Kobayashi, T. at Oizumi
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

Alternate Designations
 1999 DQ2 = 2001 QM75 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Sep-21 21:39 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin