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52179 (2270 T-2)
Classification: Main-belt Asteroid          SPK-ID: 2052179
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04361523748630655 3.9966e-08  
a 2.863205877372153 1.8977e-08 au
q 2.738326473058378 1.215e-07 au
i 1.342613624255902 5.4622e-06 deg
node 208.6688150955014 0.00018289 deg
peri 84.19956936005205 0.00019422 deg
M 297.6383532660124 6.6012e-05 deg
tp 2459307.043679590282
(2021-Apr-02.54367959)
0.00032459 TDB
period 1769.608893158955
4.84
1.7594e-05
4.817e-08
d
yr
n .2034347823362024 2.0226e-09 deg/d
Q 2.988085281685928 1.9805e-08 au
  Orbit Determination Parameters
   # obs. used (total)      699  
   data-arc span      17023 days (46.61 yr)  
   first obs. used      1973-09-19  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5747  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 10:19:28  

Additional Information
 Earth MOID = 1.72258 au 
 Jupiter MOID = 2.08435 au 
 T_jup = 3.299 
[ 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 15.2   n/a MPO436149  
rotation period rot_per 4.97 h n/a LCDB (Rev. 2019-August); 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:
[Chang, C.K.; Ip, W.-H.; Lin, H.-W.; Cheng, Y.C.; et al. (2015) Astrophys. J. Supp. Ser. 219, A27.]

52179 (2270 T-2)          Discovered 1973-Sep-29 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20021120/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
1972-Jun-14 07:46 00:02 Iris 0.044013152160027 0.0440086027630042 0.0440177018694353 3.84802773682039 3.84802770287722 2441482.823684996 2.21297754082211 299.346413238383 73.6665835675324 -42.3403059219854 62319.1756385256 T 17 CATAB v2.0f-lin.ifort 2020-May-20 10:19:35 2020-May-20 10:19

Alternate Designations
 2270 T-2 = 2000 DJ57 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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