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4281 Pounds (1985 TE1)
Classification: Main-belt Asteroid          SPK-ID: 2004281
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1104499329179175 1.8996e-08  
a 2.463819695121157 6.5335e-09 au
q 2.191690975073181 4.7663e-08 au
i .7298527625324169 2.1744e-07 deg
node 187.877631934841 5.1132e-05 deg
peri 209.7049690301135 4.9824e-05 deg
M 72.11877536625728 6.2678e-06 deg
tp 2459113.518754749106
(2020-Sep-21.01875475)
2.4572e-05 TDB
period 1412.57595921389
3.87
5.6187e-06
1.538e-08
d
yr
n .254853551521819 1.0137e-09 deg/d
Q 2.735948415169132 7.2551e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2691  
   data-arc span      15919 days (43.58 yr)  
   first obs. used      1977-09-08  
   last obs. used      2021-04-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48124  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 14:20:30  

Additional Information
 Earth MOID = 1.19827 au 
 Jupiter MOID = 2.63846 au 
 T_jup = 3.480 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457011.5 (2014-Dec-20.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1119264126381613 1.9024e-08  
q 2.18712347604786 4.7744e-08 au
tp 2457698.271743726410
(2016-Nov-05.77174373)
2.4789e-05 TDB
node 187.9299493189549 5.1161e-05 deg
peri 209.063502864407 4.9863e-05 deg
i .7292535909825713 2.1764e-07 deg
  Orbit Determination Parameters
   # obs. used (total)      2691  
   data-arc span      15919 days (43.58 yr)  
   first obs. used      1977-09-08  
   last obs. used      2021-04-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48124  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 14:20:30  

Additional Information
 Jupiter MOID = 2.63846 au 
 T_jup = 3.480 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.61923720324737E-16 -9.016415344030081E-16 1.403392491535515E-13 1.223285034080223E-13 -6.630636765831749E-14 6.674818489485119E-16
q -9.016415344030081E-16 2.279502132991707E-15 -3.775358502517934E-13 -3.07175601737131E-13 1.586238737314656E-13 -1.630215872085762E-15
tp 1.403392491535515E-13 -3.775358502517934E-13 6.14494614072079E-10 3.522619540442146E-10 -2.00579280950056E-10 5.312433455538776E-13
node 1.223285034080223E-13 -3.07175601737131E-13 3.522619540442146E-10 2.617439716125942E-9 -2.532145218442458E-9 8.247782955590415E-12
peri -6.630636765831749E-14 1.586238737314656E-13 -2.00579280950056E-10 -2.532145218442458E-9 2.486366813103838E-9 -8.156188672563614E-12
i 6.674818489485119E-16 -1.630215872085762E-15 5.312433455538776E-13 8.247782955590415E-12 -8.156188672563614E-12 4.736577002601924E-14

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.85   n/a MPCxxxxx  
diameter diameter 9.680 km 0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.055   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4281 Pounds (1985 TE1)          Discovered 1985-Oct-15 by Bowell, E. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1985 TE1 = 1981 SW4 = 1981 UT18 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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