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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 96 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04080051028194505 3.6406e-08  
a 2.215192327469483 4.8421e-09 au
q 2.124811350136078 8.0537e-08 au
i 4.234976595818243 4.1235e-06 deg
node 175.4174328543631 4.8792e-05 deg
peri 349.4168905250909 6.8226e-05 deg
M 147.9031239905521 4.8137e-05 deg
tp 2458105.744727497831
(2017-Dec-18.24472750)
0.00016083 TDB
period 1204.247032078636
3.30
3.9485e-06
1.081e-08
d
yr
n .2989419864947546 9.8016e-10 deg/d
Q 2.305573304802887 5.0396e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2721  
   data-arc span      44085 days (120.70 yr)  
   first obs. used      1899-02-17  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47464  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:53:31  

Additional Information
 Earth MOID = 1.13169 au 
 Jupiter MOID = 2.65876 au 
 T_jup = 3.649 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455765.5 (2011-Jul-23.0) TDB
Reference: JPL 96 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04058858666012127 3.6545e-08  
q 2.125694240495333 8.0838e-08 au
tp 2455699.421669228881
(2011-May-17.92166923)
0.00016049 TDB
node 175.5043771627774 4.8795e-05 deg
peri 350.2213128860121 6.8298e-05 deg
i 4.234186033041483 4.1242e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2721  
   data-arc span      44085 days (120.70 yr)  
   first obs. used      1899-02-17  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47464  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 01:53:31  

Additional Information
 Jupiter MOID = 2.65876 au 
 T_jup = 3.649 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.335560969584877E-15 -2.949416735101582E-15 1.557382359153933E-12 1.670842962321362E-15 4.661747263942908E-13 4.005454170375032E-18
q -2.949416735101582E-15 6.53472919124539E-15 -3.411404487387193E-12 -3.844119981087464E-15 -1.021421894189461E-12 4.357166219955368E-17
tp 1.557382359153933E-12 -3.411404487387193E-12 2.575769606626932E-8 4.177782337300076E-13 7.680595058288042E-9 -5.156049564884536E-14
node 1.670842962321362E-15 -3.844119981087464E-15 4.177782337300076E-13 2.380988094577103E-9 -2.373653216646388E-9 4.027296739012117E-11
peri 4.661747263942908E-13 -1.021421894189461E-12 7.680595058288042E-9 -2.373653216646388E-9 4.664551966420939E-9 -4.020003549472485E-11
i 4.005454170375032E-18 4.357166219955368E-17 -5.156049564884536E-14 4.027296739012117E-11 -4.020003549472485E-11 1.700917885142642E-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 10.28   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 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-January); 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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