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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1332841119165471 2.9768e-08  
a 2.407731538424986 7.8652e-09 au
q 2.08681917859255 7.3846e-08 au
i 6.242851412163458 3.6323e-06 deg
node 186.2385563685531 3.6348e-05 deg
peri 128.3641393225899 4.0336e-05 deg
M 311.7995123077357 1.6622e-05 deg
tp 2459183.208793947799
(2020-Nov-29.70879395)
6.3047e-05 TDB
period 1364.616188971961
3.74
6.6866e-06
1.831e-08
d
yr
n .2638104420197501 1.2927e-09 deg/d
Q 2.728643898257423 8.9135e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1102  
   data-arc span      8591 days (23.52 yr)  
   first obs. used      1997-03-05  
   last obs. used      2020-09-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5248  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:35:01  

Additional Information
 Earth MOID = 1.08029 au 
 Jupiter MOID = 2.55034 au 
 T_jup = 3.501 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457186.5 (2015-Jun-13.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1323457826943248 2.9801e-08  
q 2.090209148511604 7.3797e-08 au
tp 2457818.008423922983
(2017-Mar-05.50842392)
6.3692e-05 TDB
node 186.2728100114944 3.6382e-05 deg
peri 128.0687245664319 4.0409e-05 deg
i 6.237856605642127 3.6299e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1102  
   data-arc span      8591 days (23.52 yr)  
   first obs. used      1997-03-05  
   last obs. used      2020-09-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5248  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:35:01  

Additional Information
 Jupiter MOID = 2.55034 au 
 T_jup = 3.501 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.881043041684038E-16 -2.190363534002109E-15 -1.309279547917041E-13 1.430894052272515E-15 -1.980002736145668E-14 -1.480640790421526E-15
q -2.190363534002109E-15 5.446049126796449E-15 2.995268091040359E-13 -4.339518633978841E-15 3.781395396990483E-14 3.741182724029529E-15
tp -1.309279547917041E-13 2.995268091040359E-13 4.056681469059178E-9 5.790701925417975E-12 1.135272998781626E-9 5.810796860923746E-12
node 1.430894052272515E-15 -4.339518633978841E-15 5.790701925417975E-12 1.323620795240285E-9 -1.31368645004118E-9 2.645767137682261E-11
peri -1.980002736145668E-14 3.781395396990483E-14 1.135272998781626E-9 -1.31368645004118E-9 1.632902991833864E-9 -2.477635715407482E-11
i -1.480640790421526E-15 3.741182724029529E-15 5.810796860923746E-12 2.645767137682261E-11 -2.477635715407482E-11 1.317622118226908E-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 15.5   n/a MPO333244  

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

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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