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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 106 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04068198878418276 3.5199e-08  
a 2.215678755189492 4.5151e-09 au
q 2.125540536921521 7.8196e-08 au
i 4.234812673670644 3.8871e-06 deg
node 175.4072064187027 4.6021e-05 deg
peri 348.9418661451751 6.3762e-05 deg
M 327.7355333220585 4.4265e-05 deg
tp 2459308.464407850842
(2021-Apr-03.96440785)
0.00014814 TDB
period 1204.643709572792
3.30
3.6822e-06
1.008e-08
d
yr
n .2988435477969403 9.1347e-10 deg/d
Q 2.305816973457463 4.6988e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3235  
   data-arc span      44536 days (121.93 yr)  
   first obs. used      1899-02-17  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43809  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:46:40  

Additional Information
 Earth MOID = 1.13171 au 
 Jupiter MOID = 2.6564 au 
 T_jup = 3.649 
[ show covariance matrix ]

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 10.15   n/a E2021B10 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. 2020-October); 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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