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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1350255517422167 6.5432e-08  
a 2.296510459813043 9.4926e-09 au
q 1.986422867895015 1.4826e-07 au
i 6.827129733970057 8.0096e-06 deg
node 24.24876616175364 3.1757e-05 deg
peri 323.8158001674826 4.0631e-05 deg
M 150.2393857411364 2.3992e-05 deg
tp 2458670.003690333854
(2019-Jul-05.50369033)
8.3608e-05 TDB
period 1271.162488702332
3.48
7.8815e-06
2.158e-08
d
yr
n .2832053362174858 1.7559e-09 deg/d
Q 2.606598051731071 1.0774e-08 au
  Orbit Determination Parameters
   # obs. used (total)      323  
   data-arc span      8148 days (22.31 yr)  
   first obs. used      1998-09-25  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55158  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 20:11:06  

Additional Information
 Earth MOID = .983513 au 
 Jupiter MOID = 2.81197 au 
 T_jup = 3.573 
[ 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 17.0   n/a MPO450166  

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

[ 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
1946-May-15 04:30 < 00:01 Hebe 0.0407806728353231 0.0407678836995433 0.0407934625870488 7.50163045278068 7.50163043245957 2431955.687416451 0.856709885206785 685.521482200853 76.8122516620674 21.6844528967529 30482.8627989713 T 16 CATAB v2.0f-lin.ifort 2021-Feb-24 20:11:07 2021-Feb-24 20:11
2128-Feb-17 06:32 00:02 Eunom 0.0468010968840035 0.0467784341018839 0.0468237598426309 5.03923556704271 5.0392355075213 2498342.772381285 1.51479126853068 1138.47233457862 63.8752147249755 -7.25513652088749 15115.446816945 T 16 CATAB v2.0f-lin.ifort 2021-Feb-24 20:11:07 2021-Feb-24 20:11

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