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74571 (1999 NQ8)
Classification: Main-belt Asteroid          SPK-ID: 2074571
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1553991627290624 4.6852e-08  
a 2.281464251010259 6.392e-09 au
q 1.926926616606977 1.0517e-07 au
i 4.460475196871406 2.846e-06 deg
node 289.6206415184594 6.5027e-05 deg
peri 49.00287315592832 6.6228e-05 deg
M 55.09860994527443 1.3923e-05 deg
tp 2459007.855297649960
(2020-Jun-07.35529765)
4.8468e-05 TDB
period 1258.690426399085
3.45
5.2897e-06
1.448e-08
d
yr
n .2860115501393803 1.202e-09 deg/d
Q 2.636001885413541 7.3853e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1329  
   data-arc span      7861 days (21.52 yr)  
   first obs. used      1999-07-13  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49116  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 06:58:17  

Additional Information
 Earth MOID = .919212 au 
 Jupiter MOID = 2.73239 au 
 T_jup = 3.585 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457368.5 (2015-Dec-12.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1556818589141388 4.6883e-08  
q 1.926250650920573 1.0527e-07 au
tp 2457750.084133287275
(2016-Dec-27.58413329)
4.7308e-05 TDB
node 289.6474548133066 6.507e-05 deg
peri 49.27231213353254 6.6262e-05 deg
i 4.458984405972349 2.845e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1329  
   data-arc span      7861 days (21.52 yr)  
   first obs. used      1999-07-13  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49116  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 06:58:17  

Additional Information
 Jupiter MOID = 2.73239 au 
 T_jup = 3.585 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.198030336424151E-15 -4.929492778599966E-15 1.388383003587461E-12 1.21399536522212E-15 3.403823042354752E-13 -3.475466944567974E-15
q -4.929492778599966E-15 1.108128476261604E-14 -3.1335695359781E-12 -3.212073005302953E-15 -7.70576586362326E-13 7.807475226574221E-15
tp 1.388383003587461E-12 -3.1335695359781E-12 2.238064770584382E-9 6.324134213956765E-13 6.2346340709358E-10 -3.796897043073317E-12
node 1.21399536522212E-15 -3.212073005302953E-15 6.324134213956765E-13 4.234098007185314E-9 -4.221229791178767E-9 1.658992687317362E-11
peri 3.403823042354752E-13 -7.70576586362326E-13 6.2346340709358E-10 -4.221229791178767E-9 4.390641795814063E-9 -1.753273105681409E-11
i -3.475466944567974E-15 7.807475226574221E-15 -3.796897043073317E-12 1.658992687317362E-11 -1.753273105681409E-11 8.094267387623395E-12

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 15.57   n/a E2021B10  

74571 (1999 NQ8)          Discovered 1999-Jul-13 by LINEAR at Socorro
Reference: 20040415/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
2128-Jun-19 22:41 00:05 Eunom 0.0233463305119253 0.0233361267679655 0.0233565360610927 3.03326204207976 3.0332618438516 2498466.444877133 5.01586827634951 602.417248858794 28.6432995103724 -32.5503952867317 65664.9885107589 T 24 CATAB v2.0f-lin.ifort 2021-Feb-24 06:58:20 2021-Feb-24 06:58

Alternate Designations
 1999 NQ8 = 2001 BB25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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