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4987 Flamsteed (1980 FH12)
Classification: Main-belt Asteroid          SPK-ID: 2004987
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06389521304907245 3.4733e-08  
a 2.272168347210982 8.0752e-09 au
q 2.126987666582577 7.9462e-08 au
i 7.586306928862045 3.5843e-06 deg
node 313.1232423538862 2.7708e-05 deg
peri 272.4327587811435 4.5513e-05 deg
M 239.3903380054922 3.9173e-05 deg
tp 2459419.620385385868
(2021-Jul-24.12038539)
0.00013714 TDB
period 1251.005402417785
3.43
6.6691e-06
1.826e-08
d
yr
n .2877685414501308 1.5341e-09 deg/d
Q 2.417349027839387 8.5912e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1980  
   data-arc span      14566 days (39.88 yr)  
   first obs. used      1980-03-20  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46001  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 17:26:57  

Additional Information
 Earth MOID = 1.13354 au 
 Jupiter MOID = 2.6028 au 
 T_jup = 3.597 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9   n/a MPO400047  
diameter diameter 5.642 km 0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.185   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4987 Flamsteed           Discovered 1980 Mar. 20 at the Perth Observatory, Bickley.
John Flamsteed (1646-1719), the first Astronomer Royal, is renowned for his systematic telescopic positional observations of the sun, moon, planets and stars, culminating in Historia Coelestis Britannica (1725), containing his catalogue of 3000 stars, and Atlas Coelestis (1729), celestial charts completed by his widow.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010902/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1980 FH12 = 1983 BV = 1990 DT 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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