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JPL Small-Body Database Browser
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1616 Filipoff (1950 EA)
Classification: Main-belt Asteroid          SPK-ID: 2001616
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0194800190169922 3.6143e-08  
a 2.91016352974085 1.1362e-08 au
q 2.853473488838941 1.0499e-07 au
i 8.481092614929286 4.1097e-06 deg
node 48.27038744667053 2.3984e-05 deg
peri 11.89536231560991 9.7073e-05 deg
M 180.9674538362121 9.3492e-05 deg
tp 2459902.287072021543
(2022-Nov-18.78707202)
0.000471 TDB
period 1813.320275469665
4.96
1.062e-05
2.908e-08
d
yr
n .1985308413908056 1.1627e-09 deg/d
Q 2.966853570642758 1.1584e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2686  
   data-arc span      33255 days (91.05 yr)  
   first obs. used      1929-01-16  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45141  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:00:06  

Additional Information
 Earth MOID = 1.86495 au 
 Jupiter MOID = 2.09684 au 
 T_jup = 3.267 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456115.5 (2012-Jul-07.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02023741125150771 3.5846e-08  
q 2.852029795344138 1.0456e-07 au
tp 2456328.829722637249
(2013-Feb-05.32972264)
0.00045953 TDB
node 48.38299288342404 2.3903e-05 deg
peri 22.59971172020976 9.468e-05 deg
i 8.496422825803172 4.1158e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2686  
   data-arc span      33255 days (91.05 yr)  
   first obs. used      1929-01-16  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45141  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 16:00:06  

Additional Information
 Jupiter MOID = 2.09684 au 
 T_jup = 3.267 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.284962775860041E-15 -3.725671096746923E-15 -1.891765738351257E-12 1.389401389872225E-16 -3.775029604429548E-13 1.111345547574007E-16
q -3.725671096746923E-15 1.093180803935701E-14 4.921453689197645E-12 -1.859375698471997E-16 9.776244851596728E-13 -2.747500541042631E-16
tp -1.891765738351257E-12 4.921453689197645E-12 2.111642601103407E-7 9.348664233424797E-13 4.211220033144896E-8 1.580425093757277E-12
node 1.389401389872225E-16 -1.859375698471997E-16 9.348664233424797E-13 5.713512804023303E-10 -5.645322037961485E-10 -6.241220842146868E-13
peri -3.775029604429548E-13 9.776244851596728E-13 4.211220033144896E-8 -5.645322037961485E-10 8.964232838321893E-9 9.445564550684855E-13
i 1.111345547574007E-16 -2.747500541042631E-16 1.580425093757277E-12 -6.241220842146868E-13 9.445564550684855E-13 1.693982835211628E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.2   n/a MPO272644  
diameter diameter 23.715 km 0.184 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 5.652 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Ruthroff, J.C. (2013) Minor Planet Bull. 40, 90-91.]
geometric albedo albedo 0.083   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1616 Filipoff (1950 EA)          Discovered 1950-Mar-15 by Boyer, L. at Algiers
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1950 EA = 1929 BB = 1957 UG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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