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22217 (1260 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2022217
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1184512394500468 3.7457e-08  
a 2.653398550395065 1.203e-08 au
q 2.339100203345812 9.8127e-08 au
i 7.864315025260904 3.7739e-06 deg
node 179.2219378591313 2.5315e-05 deg
peri 304.8237759096708 2.9674e-05 deg
M 225.2701078674241 1.8303e-05 deg
tp 2459791.331470008437
(2022-Jul-30.83147001)
8.2588e-05 TDB
period 1578.709266639495
4.32
1.0737e-05
2.94e-08
d
yr
n .2280343870827531 1.5509e-09 deg/d
Q 2.967696897444318 1.3455e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1462  
   data-arc span      22006 days (60.25 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-12-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51582  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:02:36  

Additional Information
 Earth MOID = 1.36434 au 
 Jupiter MOID = 2.10841 au 
 T_jup = 3.366 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457408.5 (2016-Jan-21.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1176841793745619 3.6998e-08  
q 2.341534479880215 9.687e-08 au
tp 2456626.768247091280
(2013-Nov-30.26824709)
7.2821e-05 TDB
node 179.4521988383217 2.535e-05 deg
peri 303.409858055937 2.9866e-05 deg
i 7.857703781530872 3.7688e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1462  
   data-arc span      22006 days (60.25 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-12-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51582  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:02:36  

Additional Information
 Jupiter MOID = 2.10841 au 
 T_jup = 3.366 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.368859977753408E-15 -3.563123478230682E-15 8.648264726675189E-13 2.721564560230945E-15 1.769058353119976E-13 7.586109806763582E-16
q -3.563123478230682E-15 9.383779214099412E-15 -1.97418561665327E-12 -5.918431998958449E-15 -3.921668927251012E-13 -1.96467889402026E-15
tp 8.648264726675189E-13 -1.97418561665327E-12 5.302949709104052E-9 1.254804200993936E-11 1.163071942931981E-9 -1.959545446939375E-12
node 2.721564560230945E-15 -5.918431998958449E-15 1.254804200993936E-11 6.426054727253117E-10 -6.333975540271853E-10 -2.504961926543254E-11
peri 1.769058353119976E-13 -3.921668927251012E-13 1.163071942931981E-9 -6.333975540271853E-10 8.919729055600219E-10 2.438332390340727E-11
i 7.586109806763582E-16 -1.96467889402026E-15 -1.959545446939375E-12 -2.504961926543254E-11 2.438332390340727E-11 1.420360696074375E-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 14.36   n/a E2021B10  
diameter diameter 4.288 km 0.301 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.183   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

22217 (1260 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1260 T-2 = 6387 P-L 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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