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20072 (1994 AG1)
Classification: Main-belt Asteroid          SPK-ID: 2020072
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1657889044958195 3.5564e-08  
a 2.363520218578433 7.359e-09 au
q 1.971674790786595 8.1288e-08 au
i 5.124040556238858 3.0378e-06 deg
node 159.2765340215086 4.2994e-05 deg
peri 16.28799949748259 4.4455e-05 deg
M 109.5680521845348 1.1555e-05 deg
tp 2458796.558150173648
(2019-Nov-09.05815017)
4.207e-05 TDB
period 1327.203167695011
3.63
6.1986e-06
1.697e-08
d
yr
n .2712470922030887 1.2668e-09 deg/d
Q 2.755365646370271 8.5791e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1349  
   data-arc span      9743 days (26.67 yr)  
   first obs. used      1994-01-06  
   last obs. used      2020-09-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .498  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:12:38  

Additional Information
 Earth MOID = .976646 au 
 Jupiter MOID = 2.20585 au 
 T_jup = 3.525 
[ 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 15.31   n/a E2021B10  
diameter diameter 5.391 km 0.108 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 199.742 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.055   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20072 (1994 AG1)          Discovered 1994-Jan-07 by Kobayashi, T. at Oizumi
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 AG1 = 1998 HB4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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