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 ]  
172450 (2003 QR78)
Classification: Main-belt Asteroid          SPK-ID: 2172450
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2521424370828954 5.6356e-08  
a 2.341330444775786 1.3995e-08 au
q 1.75098168041364 1.3697e-07 au
i 3.999922348665437 5.0311e-06 deg
node 253.7533576322132 7.7808e-05 deg
peri 108.5564712915012 7.8536e-05 deg
M 245.6771847249551 1.7012e-05 deg
tp 2459416.049635184459
(2021-Jul-20.54963518)
6.4995e-05 TDB
period 1308.556549333511
3.58
1.1733e-05
3.212e-08
d
yr
n .2751122984966598 2.4667e-09 deg/d
Q 2.931679209137932 1.7524e-08 au
  Orbit Determination Parameters
   # obs. used (total)      557  
   data-arc span      15125 days (41.41 yr)  
   first obs. used      1978-11-30  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53515  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 03:18:42  

Additional Information
 Earth MOID = .753638 au 
 Jupiter MOID = 2.54985 au 
 T_jup = 3.517 
[ 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 MPO352052  
diameter diameter 1.667 km 0.225 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.366   0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172450 (2003 QR78)          Discovered 2003-Aug-24 by LINEAR at Socorro
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2051-Apr-04 05:17 00:02 Eunom 0.0425089790494622 0.0425054833026207 0.0425124761862687 2.99327062762775 2.99327051730446 2470265.720474871 1.57704542888456 426.786209425534 33.0707024959598 66.3271733894183 175887.013966434 T 17 CATAB v2.0f-lin.ifort 2020-May-21 03:19:01 2020-May-21 03:19
2072-Sep-24 07:49 00:02 Eunom 0.0417863868983579 0.0417788943258183 0.0417938819861102 3.07814351025586 3.07814340111931 2478109.825655963 1.56332015127764 634.035928940731 35.0960838847823 -54.0747901873927 144097.396759254 T 17 CATAB v2.0f-lin.ifort 2020-May-21 03:19:01 2020-May-21 03:19
2116-Nov-01 15:24 00:14 Hygie 0.0411292305521237 0.0411281606450004 0.0411303005022316 3.12955481764979 3.1295545174784 2494218.141336051 13.8567658834381 242.519129417468 51.0784550031698 -86.3876459584792 119878.985843347 T 17 CATAB v2.0f-lin.ifort 2020-May-21 03:19:01 2020-May-21 03:19

Alternate Designations
 2003 QR78 = 1978 WG19 = 1985 SD5 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-26 14:01 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin