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443 Photographica (A899 DA)
Classification: Main-belt Asteroid          SPK-ID: 2000443
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 100 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04072419272103309 3.6314e-08  
a 2.215444462702928 4.7284e-09 au
q 2.125222275441069 8.0344e-08 au
i 4.234750463124836 4.1155e-06 deg
node 175.4135060663123 4.7571e-05 deg
peri 349.1201121712476 6.6804e-05 deg
M 267.7880902469969 4.7586e-05 deg
tp 2459309.013550569780
(2021-Apr-04.51355057)
0.00015938 TDB
period 1204.452640690525
3.30
3.8559e-06
1.056e-08
d
yr
n .2988909549765347 9.5687e-10 deg/d
Q 2.305666649964788 4.9209e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2888  
   data-arc span      44181 days (120.96 yr)  
   first obs. used      1899-02-17  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46053  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:27:29  

Additional Information
 Earth MOID = 1.13172 au 
 Jupiter MOID = 2.65748 au 
 T_jup = 3.649 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455945.5 (2012-Jan-19.0) TDB
Reference: JPL 100 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0406568389307671 3.6492e-08  
q 2.125505404655019 8.0756e-08 au
tp 2455699.066283419423
(2011-May-17.56628342)
0.00015736 TDB
node 175.5029857087467 4.7576e-05 deg
peri 350.1032324950143 6.6722e-05 deg
i 4.234069058525479 4.1164e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2888  
   data-arc span      44181 days (120.96 yr)  
   first obs. used      1899-02-17  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46053  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:27:29  

Additional Information
 Jupiter MOID = 2.65748 au 
 T_jup = 3.649 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.331652509465754E-15 -2.942242210664405E-15 1.584625053382837E-12 -6.651206226741278E-16 4.771187746247196E-13 4.466933754940337E-17
q -2.942242210664405E-15 6.521471495947635E-15 -3.445072094635333E-12 1.189117406596084E-15 -1.037226525981571E-12 -4.835357047447286E-17
tp 1.584625053382837E-12 -3.445072094635333E-12 2.476298251085802E-8 -2.862989749508193E-12 7.371995494742334E-9 4.133414843854075E-14
node -6.651206226741278E-16 1.189117406596084E-15 -2.862989749508193E-12 2.263510873646407E-9 -2.257472739034226E-9 4.252135650853474E-11
peri 4.771187746247196E-13 -1.037226525981571E-12 7.371995494742334E-9 -2.257472739034226E-9 4.4518562612639E-9 -4.241407260820019E-11
i 4.466933754940337E-17 -4.835357047447286E-17 4.133414843854075E-14 4.252135650853474E-11 -4.241407260820019E-11 1.694502578675265E-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 10.1   n/a MPO502157 IRAS observations used: 22
diameter diameter 25.504 km 0.562 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 19.795 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Higgins, D.; Pravec, P.; Kusnirak, P.; Hornoch, K.; Brinsfield, J.W.; Allen, B.; Warner, B.D. (2008) Minor Planet Bull. 35, 123-126.]
geometric albedo albedo 0.210   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.902   0.025 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=4.55, mean=7.11, max.=9.66) deg.
U-B UB 0.479   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=4.55, mean=7.11, max.=9.66) deg.
Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo
SMASSII spectral type spec_B Sl   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

443 Photographica (A899 DA)          Discovered 1899-Feb-17 by Wolf, M. and Schwassmann, A. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A899 DA = 1930 YG = 1930 YJ = 1947 WC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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