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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06379194080215346 1.6e-08  
a 2.272112357803717 6.4707e-09 au
q 2.127169900778861 3.65e-08 au
i 7.586455652483131 6.1913e-07 deg
node 313.1228867079139 4.3652e-06 deg
peri 272.4652240965304 1.6133e-05 deg
M 296.9005737960418 1.4566e-05 deg
tp 2459419.763348290751
(2021-Jul-24.26334829)
5.0891e-05 TDB
period 1250.959162917379
3.42
5.3439e-06
1.463e-08
d
yr
n .2877791783070192 1.2293e-09 deg/d
Q 2.417054814828573 6.8835e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2295  
   data-arc span      14978 days (41.01 yr)  
   first obs. used      1980-03-20  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45681  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-03 21:59:23  

Additional Information
 Earth MOID = 1.13245 au 
 Jupiter MOID = 2.60198 au 
 T_jup = 3.597 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.99   n/a MPCxxxxx  
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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