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2062 Aten (1976 AA)
Classification: Aten [NEO]          SPK-ID: 2002062
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 149 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1828094022325027 1.4176e-09  
a .9669000348160501 8.5499e-10 au
q .7901416174327419 1.2356e-09 au
i 18.93485315887816 7.1109e-07 deg
node 108.5437615317471 1.414e-06 deg
peri 148.055970302887 1.6937e-06 deg
M 169.9967002396309 3.5132e-06 deg
tp 2459232.513241473872
(2021-Jan-18.01324147)
3.1779e-06 TDB
period 347.2728175675691
0.95
4.6062e-07
1.261e-09
d
yr
n 1.03664894511922 1.375e-09 deg/d
Q 1.143658452199358 1.0113e-09 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -1.060848761330574E-14 1.147E-15
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      1024  
   # delay obs. used      5  
   # Doppler obs. used      2  
   data-arc span      23339 days (63.90 yr)  
   first obs. used      1955-12-17  
   last obs. used      2019-11-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .34905  
   source      ORB  
   producer      Giorgini  
   solution date      2021-May-24 18:22:09  

Additional Information
 Earth MOID = .113732 au 
 Jupiter MOID = 3.92639 au 
 T_jup = 6.183 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456625.5 (2013-Nov-29.0) TDB
Reference: JPL 149 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1827777199294401 1.3752e-09  
q .7901607518456291 1.2212e-09 au
tp 2456454.772636299228
(2013-Jun-11.27263630)
7.1437e-07 TDB
node 108.5808889277274 1.4144e-06 deg
peri 148.0008475460429 1.7056e-06 deg
i 18.93471305835972 7.1087e-07 deg

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] -1.060848761330574E-14 1.147E-15
ALN [SET] 1. n/a
NK [SET] 0. n/a
NM [SET] 2. n/a
R0 [SET] 1. n/a
  Orbit Determination Parameters
   # obs. used (total)      1024  
   # delay obs. used      5  
   # Doppler obs. used      2  
   data-arc span      23339 days (63.90 yr)  
   first obs. used      1955-12-17  
   last obs. used      2019-11-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .34905  
   source      ORB  
   producer      Giorgini  
   solution date      2021-May-24 18:22:09  

Additional Information
 Jupiter MOID = 3.92639 au 
 T_jup = 6.183 
 Nongravitational accels. using nonstandard g(r) = (1 au/ r)^2 
Orbit Covariance (7×7)
  e q tp node peri i A2
e 1.891162217431941E-18 -1.596491402951598E-18 1.877166821387775E-16 -1.271726386210627E-15 1.581045528399697E-15 -1.445403348258655E-16 4.00126192925771E-25
q -1.596491402951598E-18 1.491304774992955E-18 2.48360737222832E-17 9.090204979703118E-16 -9.304514769458561E-16 7.059295203235506E-17 -9.555937825363105E-26
tp 1.877166821387775E-16 2.48360737222832E-17 5.103274076607163E-13 -1.837530220709452E-14 6.161162426498877E-13 -2.692078606876032E-13 3.481178071361207E-22
node -1.271726386210627E-15 9.090204979703118E-16 -1.837530220709452E-14 2.000629963321216E-12 -2.09083915277175E-12 -9.585387305868809E-14 -5.277537655469148E-22
peri 1.581045528399697E-15 -9.304514769458561E-16 6.161162426498877E-13 -2.09083915277175E-12 2.908960022676742E-12 -2.227913063075434E-13 1.006983032674204E-21
i -1.445403348258655E-16 7.059295203235506E-17 -2.692078606876032E-13 -9.585387305868809E-14 -2.227913063075434E-13 5.053415682802225E-13 -1.130280299471828E-22
A2 4.00126192925771E-25 -9.555937825363105E-26 3.481178071361207E-22 -5.277537655469148E-22 1.006983032674204E-21 -1.130280299471828E-22 1.31602270891502E-30

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 17.1   n/a MPO492774  
diameter diameter 1.1 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543  
rotation period rot_per 42.15 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Mottola, S.; De Angelis, G.; Di Martino, M.; Erikson, A.; et al. (1995) Icarus 117, 62-70; Mottola, S.; De Angelis, G.; Di Martino, M.; Erikson, A.; Harris, A.W.; Hahn, G.; Neukum, G.; Pravec, M.; Wolf, M. (1995) Lunar & Planetary Science XXVI, 1003-1004.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2019) http://www.asu.cas.cz/~ppravec/neo.htm]
geometric albedo albedo 0.26   n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543  
B-V BV 0.930   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=59.82 deg.
U-B UB 0.460   0.040 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=59.82 deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Sr   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

2062 Aten (1976 AA)          Discovered 1976-Jan-07 by Helin, E. F. at Palomar
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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