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24780 (1993 QA1)
Classification: Main-belt Asteroid          SPK-ID: 2024780
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2305254935170967 3.0939e-08  
a 2.687373763553782 1.0184e-08 au
q 2.067865600445649 8.0479e-08 au
i 11.21700471010545 4.126e-06 deg
node 125.3527195782513 1.8124e-05 deg
peri 247.6961998365975 2.0795e-05 deg
M 44.27126933095659 9.0746e-06 deg
tp 2459002.616305738951
(2020-Jun-02.11630574)
4.0304e-05 TDB
period 1609.127793500251
4.41
9.1469e-06
2.504e-08
d
yr
n .223723685249952 1.2717e-09 deg/d
Q 3.306881926661914 1.2532e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1615  
   data-arc span      10059 days (27.54 yr)  
   first obs. used      1993-08-19  
   last obs. used      2021-03-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47936  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:49:12  

Additional Information
 Earth MOID = 1.09575 au 
 Jupiter MOID = 2.25013 au 
 T_jup = 3.308 
[ 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 14.07   n/a MPCxxxxx  
diameter diameter 4.405 km 0.442 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.478   0.091 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

24780 (1993 QA1)          Discovered 1993-Aug-19 by Helin, E. F. at Palomar
Reference: 20010606/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1993 QA1 = 1998 XN84 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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