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 ]  
160549 (1998 QP20)
Classification: Main-belt Asteroid          SPK-ID: 2160549
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2977164199516422 3.6047e-08  
a 2.736403745114056 1.4207e-08 au
q 1.921731418576433 9.6982e-08 au
i 4.246487869251453 5.113e-06 deg
node 305.8765453383782 6.1666e-05 deg
peri 118.7141710591085 6.2791e-05 deg
M 145.3238120103414 1.0949e-05 deg
tp 2457933.074229242612
(2017-Jun-28.57422924)
4.6874e-05 TDB
period 1653.364814401935
4.53
1.2876e-05
3.525e-08
d
yr
n .2177377895453892 1.6957e-09 deg/d
Q 3.551076071651679 1.8437e-08 au
  Orbit Determination Parameters
   # obs. used (total)      769  
   data-arc span      7204 days (19.72 yr)  
   first obs. used      1998-08-17  
   last obs. used      2018-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54033  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:35:08  

Additional Information
 Earth MOID = .939336 au 
 Jupiter MOID = 1.81048 au 
 T_jup = 3.282 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456620.5 (2013-Nov-24.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2994040937069244 3.608e-08  
q 1.914944955664099 9.7134e-08 au
tp 2456282.265255535732
(2012-Dec-20.76525554)
4.0172e-05 TDB
node 305.9426941552009 6.1692e-05 deg
peri 118.5895087318861 6.2788e-05 deg
i 4.248086865954244 5.1153e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      769  
   data-arc span      7204 days (19.72 yr)  
   first obs. used      1998-08-17  
   last obs. used      2018-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54033  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:35:08  

Additional Information
 Jupiter MOID = 1.81048 au 
 T_jup = 3.282 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.301768404467254E-15 -3.487381484790494E-15 -1.192811152538591E-13 -1.813674688333417E-14 -3.529879136565964E-14 -4.540012643323553E-15
q -3.487381484790494E-15 9.435109787230808E-15 4.68179560814218E-13 5.121512611323922E-14 1.412039295642584E-13 1.280922743095717E-14
tp -1.192811152538591E-13 4.68179560814218E-13 1.613792181140499E-9 7.842661541462888E-12 4.880253036217464E-10 1.784618734988227E-12
node -1.813674688333417E-14 5.121512611323922E-14 7.842661541462888E-12 3.805852608565624E-9 -3.791625666066122E-9 6.633884053974165E-11
peri -3.529879136565964E-14 1.412039295642584E-13 4.880253036217464E-10 -3.791625666066122E-9 3.942277504002573E-9 -6.541471576561274E-11
i -4.540012643323553E-15 1.280922743095717E-14 1.784618734988227E-12 6.633884053974165E-11 -6.541471576561274E-11 2.616587810753127E-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 14.9   n/a MPO439950  

160549 (1998 QP20)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

[ show close-approach data ]
Alternate Designations
 1998 QP20 = 2000 DN53 
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-11 03:26 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin