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146830 (2002 AT8)
Classification: Main-belt Asteroid          SPK-ID: 2146830
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07087281027057747 5.1282e-08  
a 2.926774180151355 2.4221e-08 au
q 2.719345468976663 1.5042e-07 au
i 2.392721086434988 8.1915e-06 deg
node 153.6324283633983 0.00017223 deg
peri 283.6078319629314 0.00018509 deg
M 271.064267580949 6.7075e-05 deg
tp 2459452.310203553209
(2021-Aug-25.81020355)
0.00034185 TDB
period 1828.867530013321
5.01
2.2703e-05
6.216e-08
d
yr
n .1968431250990485 2.4435e-09 deg/d
Q 3.134202891326047 2.5938e-08 au
  Orbit Determination Parameters
   # obs. used (total)      262  
   data-arc span      8271 days (22.64 yr)  
   first obs. used      1995-09-26  
   last obs. used      2018-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5552  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-31 16:18:43  

Additional Information
 Earth MOID = 1.73595 au 
 Jupiter MOID = 2.03765 au 
 T_jup = 3.273 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456298.5 (2013-Jan-06.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07108059002160665 5.4232e-08  
q 2.719256651300975 1.6006e-07 au
tp 2455771.432680678285
(2011-Jul-28.93268068)
0.00032874 TDB
node 153.8673832655556 0.00017267 deg
peri 279.6217987992819 0.00018508 deg
i 2.390523241895028 8.2e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      262  
   data-arc span      8271 days (22.64 yr)  
   first obs. used      1995-09-26  
   last obs. used      2018-05-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5552  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-31 16:18:43  

Additional Information
 Jupiter MOID = 2.03765 au 
 T_jup = 3.273 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.941080328559514E-15 -8.59458000190734E-15 -9.794167936085718E-12 9.349126887042791E-15 -1.956277082278409E-12 4.987384640912952E-16
q -8.59458000190734E-15 2.561940776661858E-14 2.978336494133765E-11 -3.499318510359576E-14 5.980613060629195E-12 -1.453272721962953E-15
tp -9.794167936085718E-12 2.978336494133765E-11 1.080677458490605E-7 -2.671742418041918E-10 2.198771285034287E-8 -9.194939126838792E-12
node 9.349126887042791E-15 -3.499318510359576E-14 -2.671742418041918E-10 2.98146940686548E-8 -2.984289609838753E-8 8.783441006686839E-10
peri -1.956277082278409E-12 5.980613060629195E-12 2.198771285034287E-8 -2.984289609838753E-8 3.425645638122465E-8 -8.79464087156693E-10
i 4.987384640912952E-16 -1.453272721962953E-15 -9.194939126838792E-12 8.783441006686839E-10 -8.79464087156693E-10 6.723980991959543E-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 16.2   n/a MPO439881  

146830 (2002 AT8)          Discovered 2002-Jan-07 by Spacewatch at Kitt Peak
Reference: 20070106/Numbers.arcLast Updated: 2007-01-09

[ 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
2026-Jul-20 13:08 00:02 Ceres 0.0151155195309843 0.0151144760301858 0.0151165635689819 3.52907938050882 3.52907146082858 2461242.047250571 1.71161016576084 315.113852149567 45.9462189645128 85.7028247429775 48552.3788529129 T 14 CATAB v2.0e-lin.ifort 2018-May-31 16:18:45 2018-Dec-17 18:50
2196-Nov-09 10:42 00:16 Ceres 0.0382557258578812 0.0382314893622823 0.038280045635711 3.47402143075656 3.4740182519586 2523445.945620112 16.4568535666156 3031.40599302366 45.8907549580279 -66.7763852898129 113350.541993496 T 14 CATAB v2.0e-lin.ifort 2018-May-31 16:18:45 2018-Dec-17 18:50

Alternate Designations
 2002 AT8 = 1995 SD47 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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