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JPL Small-Body Database Browser
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268876 (2007 AU21)
Classification: Main-belt Asteroid          SPK-ID: 2268876
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1418312902993195 5.6756e-08  
a 2.40167288960653 2.3358e-08 au
q 2.061040524796741 1.3421e-07 au
i 2.690308815309486 9.0025e-06 deg
node 12.26272180503217 0.00011965 deg
peri 104.0623530658567 0.00012698 deg
M 214.5798441191787 4.734e-05 deg
tp 2459549.650414235573
(2021-Dec-01.15041424)
0.00018472 TDB
period 1359.468692131138
3.72
1.9833e-05
5.43e-08
d
yr
n .2648093347671397 3.8632e-09 deg/d
Q 2.74230525441632 2.6671e-08 au
  Orbit Determination Parameters
   # obs. used (total)      130  
   data-arc span      9053 days (24.79 yr)  
   first obs. used      1994-09-08  
   last obs. used      2019-06-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58765  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 04:38:58  

Additional Information
 Earth MOID = 1.07928 au 
 Jupiter MOID = 2.34096 au 
 T_jup = 3.510 
[ 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 17.5   n/a MPO476136  

268876 (2007 AU21)          Discovered 2007-Jan-15 by LONEOS at Anderson Mesa
Reference: 20110319/Numbers.arcLast Updated: 2011-03-23

[ 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
1950-Jan-30 06:46 00:07 Psych 0.0262104623451612 0.0261966602737401 0.0262242645336352 2.98483544974445 2.98483529509154 2433311.781629697 6.91914741704683 692.880859499683 56.8317808535094 -7.33597486472785 10427.0509510875 T 8 CATAB v2.0f-lin.ifort 2019-Sep-24 04:39:00 2019-Sep-24 04:39
2124-Nov-15 23:00 00:20 Psych 0.040497361866522 0.0404783051587447 0.0405164196644704 2.65115017002144 2.65115005732969 2497154.458440587 19.8798797836909 1004.43709122068 56.7102577268148 19.2758232457853 35648.0623982842 T 8 CATAB v2.0f-lin.ifort 2019-Sep-24 04:39:00 2019-Sep-24 04:39
2135-Mar-26 02:19 < 00:01 Eunom 0.0383086269785399 0.038290485143559 0.0383267821242214 5.1802495093413 5.1802494386043 2500936.596566631 0.626148104605363 1446.13912234615 67.8647562325086 -51.3697656771475 65972.3364508334 T 8 CATAB v2.0f-lin.ifort 2019-Sep-24 04:39:00 2019-Sep-24 04:39

Alternate Designations
 2007 AU21 = 2000 GR181 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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