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277256 (2005 SW2)
Classification: Main-belt Asteroid          SPK-ID: 2277256
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1349452063651189 6.5753e-08  
a 2.296442914267086 9.4974e-09 au
q 1.986548951295599 1.4904e-07 au
i 6.827028114165957 8.4581e-06 deg
node 24.25677520091785 3.2059e-05 deg
peri 323.7745696938262 4.2247e-05 deg
M 93.64422976329728 2.538e-05 deg
tp 2458669.856165343784
(2019-Jul-05.35616534)
8.9014e-05 TDB
period 1271.106407486208
3.48
7.8854e-06
2.159e-08
d
yr
n .2832178312372374 1.757e-09 deg/d
Q 2.606336877238573 1.0779e-08 au
  Orbit Determination Parameters
   # obs. used (total)      319  
   data-arc span      7792 days (21.33 yr)  
   first obs. used      1998-09-25  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55059  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 14:10:57  

Additional Information
 Earth MOID = .985379 au 
 Jupiter MOID = 2.81188 au 
 T_jup = 3.573 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457286.5 (2015-Sep-21.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1360073991495673 6.5962e-08  
q 1.983834095560017 1.4969e-07 au
tp 2457398.580161964012
(2016-Jan-11.08016196)
8.6116e-05 TDB
node 24.2828432440935 3.2025e-05 deg
peri 323.6706440013047 4.2051e-05 deg
i 6.832075491400337 8.462e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      319  
   data-arc span      7792 days (21.33 yr)  
   first obs. used      1998-09-25  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55059  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 14:10:57  

Additional Information
 Jupiter MOID = 2.81188 au 
 T_jup = 3.573 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.351037521640972E-15 -9.86016322904517E-15 2.963187709200624E-12 -1.644144827028776E-14 7.956975739277033E-13 -8.154640437386495E-15
q -9.86016322904517E-15 2.240740554062947E-14 -6.671984665620082E-12 3.69244921746318E-14 -1.792610910380621E-12 1.889033055925576E-14
tp 2.963187709200624E-12 -6.671984665620082E-12 7.415980530871294E-9 -2.021045192586501E-11 2.342207085462222E-9 -9.188722878902491E-12
node -1.644144827028776E-14 3.69244921746318E-14 -2.021045192586501E-11 1.025626784673821E-9 -1.023483300485771E-9 2.588889021541206E-11
peri 7.956975739277033E-13 -1.792610910380621E-12 2.342207085462222E-9 -1.023483300485771E-9 1.768319043225366E-9 -2.825156224751632E-11
i -8.154640437386495E-15 1.889033055925576E-14 -9.188722878902491E-12 2.588889021541206E-11 -2.825156224751632E-11 7.160615339156031E-11

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 17.0   n/a MPO450166  

277256 (2005 SW2)          Discovered 2005-Sep-23 by CSS at Catalina
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

[ show close-approach data ]
Alternate Designations
 2005 SW2 = 2004 JN52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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