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277228 (2005 QW171)
Classification: Main-belt Asteroid          SPK-ID: 2277228
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1523601898759041 5.4185e-08  
a 2.20311775943053 1.21e-08 au
q 1.867450319284718 1.2016e-07 au
i 3.922919280140725 6.4775e-06 deg
node 313.8436096661666 8.4929e-05 deg
peri 342.4860963478126 8.8468e-05 deg
M 227.3672206484268 2.5861e-05 deg
tp 2459440.551356018612
(2021-Aug-14.05135602)
8.6349e-05 TDB
period 1194.414298947746
3.27
9.8401e-06
2.694e-08
d
yr
n .3014029556722089 2.4831e-09 deg/d
Q 2.538785199576342 1.3944e-08 au
  Orbit Determination Parameters
   # obs. used (total)      326  
   data-arc span      6311 days (17.28 yr)  
   first obs. used      2002-11-04  
   last obs. used      2020-02-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59698  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 21:19:54  

Additional Information
 Earth MOID = .852026 au 
 Jupiter MOID = 2.64882 au 
 T_jup = 3.645 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457276.5 (2015-Sep-11.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1528210629294698 5.4267e-08  
q 1.866372265366534 1.2041e-07 au
tp 2457051.744510736516
(2015-Jan-29.24451074)
8.5029e-05 TDB
node 313.9087759940774 8.4879e-05 deg
peri 342.448612797394 8.8406e-05 deg
i 3.924164104600418 6.4811e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      326  
   data-arc span      6311 days (17.28 yr)  
   first obs. used      2002-11-04  
   last obs. used      2020-02-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59698  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 21:19:54  

Additional Information
 Jupiter MOID = 2.64882 au 
 T_jup = 3.645 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.944923560051586E-15 -6.510672355456958E-15 2.869632547777585E-12 -9.733485645311996E-15 7.994396887837863E-13 -1.283636289868312E-15
q -6.510672355456958E-15 1.449821699066897E-14 -6.375975196215623E-12 2.092456979373537E-14 -1.771896392593448E-12 3.060462710683101E-15
tp 2.869632547777585E-12 -6.375975196215623E-12 7.229992544363291E-9 -4.142294546827593E-11 2.135676884876927E-9 -5.763416901625554E-12
node -9.733485645311996E-15 2.092456979373537E-14 -4.142294546827593E-11 7.204395898134022E-9 -7.198879470592433E-9 2.817078546833421E-10
peri 7.994396887837863E-13 -1.771896392593448E-12 2.135676884876927E-9 -7.198879470592433E-9 7.815693885256097E-9 -2.827813051894607E-10
i -1.283636289868312E-15 3.060462710683101E-15 -5.763416901625554E-12 2.817078546833421E-10 -2.827813051894607E-10 4.200445117100181E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.4   n/a MPO455058  

277228 (2005 QW171)          Discovered 2005-Aug-29 by NEAT at Palomar
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

Alternate Designations
 2005 QW171 = 2002 VQ136 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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