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1611 Beyer (1950 DJ)
Classification: Main-belt Asteroid          SPK-ID: 2001611
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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1615888913154281 3.5331e-08  
a 3.177413819484268 1.5275e-08 au
q 2.663979043143486 1.153e-07 au
i 4.276621775881575 3.7307e-06 deg
node 237.4826013962106 5.5629e-05 deg
peri 75.06281605053898 5.688e-05 deg
M .528049423530299 1.2953e-05 deg
tp 2459197.465541732550
(2020-Dec-13.96554173)
7.4423e-05 TDB
period 2068.755172534063
5.66
1.4918e-05
4.084e-08
d
yr
n .1740176917885494 1.2549e-09 deg/d
Q 3.690848595825051 1.7743e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2548  
   data-arc span      25849 days (70.77 yr)  
   first obs. used      1950-02-17  
   last obs. used      2020-11-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46612  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:41:32  

Additional Information
 Earth MOID = 1.65206 au 
 Jupiter MOID = 1.60929 au 
 T_jup = 3.176 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456474.5 (2013-Jul-01.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1603584037693527 3.5436e-08  
q 2.664657846733493 1.1509e-07 au
tp 2457137.689311069244
(2015-Apr-25.18931107)
7.0763e-05 TDB
node 237.5556493867623 5.5534e-05 deg
peri 76.16370891545988 5.6786e-05 deg
i 4.281043378620143 3.735e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2548  
   data-arc span      25849 days (70.77 yr)  
   first obs. used      1950-02-17  
   last obs. used      2020-11-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46612  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 12:41:32  

Additional Information
 Jupiter MOID = 1.60929 au 
 T_jup = 3.176 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.255724326686722E-15 -4.055417368222082E-15 3.965978945319253E-13 -1.238350837382234E-15 8.741888634240616E-14 -5.07082182409821E-17
q -4.055417368222082E-15 1.324670081326148E-14 -1.105221259248509E-12 6.669227230685622E-15 -2.651447389630681E-13 3.463084651528446E-16
tp 3.965978945319253E-13 -1.105221259248509E-12 5.007364657079947E-9 -2.518144656922276E-12 8.647515873986303E-10 5.8942959232562E-14
node -1.238350837382234E-15 6.669227230685622E-15 -2.518144656922276E-12 3.084032416555483E-9 -3.075612558749435E-9 -3.19724410256457E-11
peri 8.741888634240616E-14 -2.651447389630681E-13 8.647515873986303E-10 -3.075612558749435E-9 3.224609181069883E-9 3.188877487660512E-11
i -5.07082182409821E-17 3.463084651528446E-16 5.8942959232562E-14 -3.19724410256457E-11 3.188877487660512E-11 1.395012261253675E-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 11.86   n/a E2021B10  
diameter diameter 24.444 km 0.192 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 13.29 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.062   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1611 Beyer (1950 DJ)          Discovered 1950-Feb-17 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1950 DJ = 1958 RE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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