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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 
[ 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 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1966-Mar-29 16:07 < 00:01 Hebe 0.0141542753206246 0.0141494248035222 0.0141591260492984 5.8620774657047 5.86207739078115 2439214.171827804 0.636202075296224 257.137447689319 39.4246633162063 20.1290239692812 20027.0409744769 T 28 CATAB v2.0f-lin.ifort 2021-Apr-13 04:02:40 2021-Apr-13 04:02

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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