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90890 (1997 AT12)
Classification: Main-belt Asteroid          SPK-ID: 2090890
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2205782223889277 3.474e-08  
a 2.578062003156775 1.4384e-08 au
q 2.009397669292016 9.5947e-08 au
i 3.925767437196539 6.3056e-06 deg
node 328.3926151764494 5.4681e-05 deg
peri 107.4331653074302 5.9904e-05 deg
M 355.4302815595327 2.6966e-05 deg
tp 2459415.692228488164
(2021-Jul-20.19222849)
0.00011338 TDB
period 1511.953601901253
4.14
1.2653e-05
3.464e-08
d
yr
n .2381025446464143 1.9927e-09 deg/d
Q 3.146726337021535 1.7557e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1095  
   data-arc span      16687 days (45.69 yr)  
   first obs. used      1975-12-02  
   last obs. used      2021-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47546  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 02:01:17  

Additional Information
 Earth MOID = 1.02864 au 
 Jupiter MOID = 2.14154 au 
 T_jup = 3.388 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.78   n/a MPCxxxxx  
diameter diameter 6.885 km 0.127 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

90890 (1997 AT12)          Discovered 1997-Jan-10 by Kobayashi, T. at Oizumi
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1997 AT12 = 1975 XK3 = 2000 QV181 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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