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24891 (1997 AT2)
Classification: Main-belt Asteroid          SPK-ID: 2024891
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1712595330530247 3.0914e-08  
a 2.149501215559054 7.6074e-09 au
q 1.781378641085501 6.7672e-08 au
i 4.491287997404823 3.5293e-06 deg
node 17.631414588253 4.4553e-05 deg
peri 345.3041727857114 4.7274e-05 deg
M 8.427483593252841 1.9667e-05 deg
tp 2459369.553622827109
(2021-Jun-04.05362283)
6.2774e-05 TDB
period 1151.07857225699
3.15
6.1107e-06
1.673e-08
d
yr
n .3127501533575819 1.6603e-09 deg/d
Q 2.517623790032606 8.9102e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1306  
   data-arc span      20375 days (55.78 yr)  
   first obs. used      1964-10-08  
   last obs. used      2020-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52653  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:50:59  

Additional Information
 Earth MOID = .77866 au 
 Jupiter MOID = 2.9373 au 
 T_jup = 3.683 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457264.5 (2015-Aug-30.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1712774225751884 3.0869e-08  
q 1.78126150509432 6.7583e-08 au
tp 2457066.497598156606
(2015-Feb-12.99759816)
5.4147e-05 TDB
node 17.68055229877102 4.457e-05 deg
peri 345.1264739515277 4.7298e-05 deg
i 4.491599339981947 3.5276e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1306  
   data-arc span      20375 days (55.78 yr)  
   first obs. used      1964-10-08  
   last obs. used      2020-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52653  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:50:59  

Additional Information
 Jupiter MOID = 2.9373 au 
 T_jup = 3.683 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.529016940521038E-16 -2.077512817882366E-15 -2.455938353266928E-14 -3.198854475124264E-15 -6.679908142482576E-15 1.10154544129597E-15
q -2.077512817882366E-15 4.567528935816847E-15 2.805759030692559E-13 4.520680348363015E-15 8.149822781453059E-14 -2.530511205636659E-15
tp -2.455938353266928E-14 2.805759030692559E-13 2.931850691890695E-9 -3.123905028412278E-11 8.687246548167206E-10 -2.359806654899697E-12
node -3.198854475124264E-15 4.520680348363015E-15 -3.123905028412278E-11 1.986464039854513E-9 -1.988908987459519E-9 1.778897152240911E-11
peri -6.679908142482576E-15 8.149822781453059E-14 8.687246548167206E-10 -1.988908987459519E-9 2.237058370387906E-9 -1.841351985011545E-11
i 1.10154544129597E-15 -2.530511205636659E-15 -2.359806654899697E-12 1.778897152240911E-11 -1.841351985011545E-11 1.24438313727054E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.4   n/a MPO365547  
rotation period rot_per 6.1709 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2005) http://www.asu.cas.cz/~ppravec/neo.htm]

24891 (1997 AT2)          Discovered 1997-Jan-04 by Kobayashi, T. at Oizumi
Reference: 20010606/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 AT2 = 1964 TJ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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