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249561 (4547 P-L)
Classification: Main-belt Asteroid          SPK-ID: 2249561
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1946337019478412 4.949e-08  
a 2.589814792380619 1.4334e-08 au
q 2.0857495519803 1.2772e-07 au
i 14.38982075213299 5.1028e-06 deg
node 6.665532530050577 2.211e-05 deg
peri 1.437853135801561 2.7838e-05 deg
M 111.1601055812935 1.7177e-05 deg
tp 2458530.445800138392
(2019-Feb-15.94580014)
7.0792e-05 TDB
period 1522.304347097129
4.17
1.2638e-05
3.46e-08
d
yr
n .2364835919219974 1.9633e-09 deg/d
Q 3.093880032780939 1.7124e-08 au
  Orbit Determination Parameters
   # obs. used (total)      414  
   data-arc span      21729 days (59.49 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53581  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:16:56  

Additional Information
 Earth MOID = 1.08482 au 
 Jupiter MOID = 2.3681 au 
 T_jup = 3.350 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457335.5 (2015-Nov-09.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1946699527758511 5.0378e-08  
q 2.085120602406497 1.3041e-07 au
tp 2457003.688902286066
(2014-Dec-12.18890229)
6.5374e-05 TDB
node 6.721892273831235 2.2084e-05 deg
peri .5731809672769205 2.7782e-05 deg
i 14.40321268993699 5.1124e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      414  
   data-arc span      21729 days (59.49 yr)  
   first obs. used      1960-09-24  
   last obs. used      2020-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53581  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 00:16:56  

Additional Information
 Jupiter MOID = 2.3681 au 
 T_jup = 3.350 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.53793294874231E-15 -6.543572626688205E-15 -1.508513208840477E-12 1.327793201061002E-15 -4.690429039704026E-13 7.242243116630981E-15
q -6.543572626688205E-15 1.700672797870804E-14 4.162963221806786E-12 -1.755987302562294E-15 1.279035947292711E-12 -2.020128721737581E-14
tp -1.508513208840477E-12 4.162963221806786E-12 4.273730022996236E-9 -4.941404773075004E-13 1.132283891845908E-9 -1.672799193677748E-11
node 1.327793201061002E-15 -1.755987302562294E-15 -4.941404773075004E-13 4.877196314843501E-10 -4.723092001292493E-10 -4.268005539998906E-11
peri -4.690429039704026E-13 1.279035947292711E-12 1.132283891845908E-9 -4.723092001292493E-10 7.718125591848768E-10 3.693464756433962E-11
i 7.242243116630981E-15 -2.020128721737581E-14 -1.672799193677748E-11 -4.268005539998906E-11 3.693464756433962E-11 2.613681810390272E-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 16.0   n/a MPO454850  
diameter diameter 1.746 km 0.397 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.253   0.071 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249561 (4547 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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