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72255 (2001 AZ31)
Classification: Main-belt Asteroid          SPK-ID: 2072255
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1069053234079159 3.4664e-08  
a 2.294117984714877 8.0296e-09 au
q 2.048864559623017 8.1244e-08 au
i 5.31896112766787 3.8432e-06 deg
node 333.3270774642813 3.7892e-05 deg
peri 38.78193835376833 4.1756e-05 deg
M 39.61278071726959 1.734e-05 deg
tp 2459256.845517350262
(2021-Feb-11.34551735)
6.0966e-05 TDB
period 1269.176585020387
3.47
6.6634e-06
1.824e-08
d
yr
n .2836484727570177 1.4892e-09 deg/d
Q 2.539371409806737 8.888e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1007  
   data-arc span      8316 days (22.77 yr)  
   first obs. used      1998-03-03  
   last obs. used      2020-12-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49817  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:01:04  

Additional Information
 Earth MOID = 1.0504 au 
 Jupiter MOID = 2.91043 au 
 T_jup = 3.583 
[ 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 15.83   n/a E2021B10  
diameter diameter 3.599 km 0.059 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.387 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.073   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

72255 (2001 AZ31)          Discovered 2001-Jan-04 by LINEAR at Socorro
Reference: 20031109/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
2052-Jan-01 20:57 < 00:01 Hebe 0.044013646498185 0.0440094538158958 0.044017840157978 7.59030836154813 7.59030834293965 2470538.372801616 0.273023664365329 390.508387861478 27.2348700075317 -57.853664931395 204855.052946965 T 23 CATAB v2.0f-lin.ifort 2021-Apr-13 13:01:06 2021-Apr-13 13:01
2138-Nov-17 04:06 < 00:01 Hebe 0.0441513154154364 0.044134832875478 0.0441678046166901 7.66499316694726 7.66499314857755 2502268.670989270 0.363005731650816 1186.37283159467 27.121450663833 46.1614438414345 175667.167360577 T 23 CATAB v2.0f-lin.ifort 2021-Apr-13 13:01:06 2021-Apr-13 13:01
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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