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48956 (1998 QY23)
Classification: Main-belt Asteroid          SPK-ID: 2048956
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1332925897939096 2.9759e-08  
a 2.408058131741392 7.9508e-09 au
q 2.087081826987299 7.3856e-08 au
i 6.24361827309908 3.5727e-06 deg
node 186.2089921326612 3.5852e-05 deg
peri 128.2403919558664 3.9573e-05 deg
M 4.676561159082323 1.6097e-05 deg
tp 2459182.769417867780
(2020-Nov-29.26941787)
6.1023e-05 TDB
period 1364.893850517203
3.74
6.7598e-06
1.851e-08
d
yr
n .2637567748316722 1.3063e-09 deg/d
Q 2.729034436495486 9.0106e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1111  
   data-arc span      8591 days (23.52 yr)  
   first obs. used      1997-03-05  
   last obs. used      2020-09-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52937  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 10:13:07  

Additional Information
 Earth MOID = 1.0786 au 
 Jupiter MOID = 2.54862 au 
 T_jup = 3.501 
[ 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 15.52   n/a MPCxxxxx  

48956 (1998 QY23)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ 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
1956-Feb-14 02:58 < 00:01 Amphi 0.0380143638516476 0.0380120804154546 0.0380166483427801 4.9404057150451 4.94040568443514 2435517.623630452 0.538809821631021 350.896874480391 35.1641773166963 71.9293880564444 153774.411909428 T 31 CATAB v2.0f-lin.ifort 2021-Apr-13 10:13:10 2021-Apr-13 10:13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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