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JPL Small-Body Database Browser
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488 Kreusa (A902 MC)
Classification: Main-belt Asteroid          SPK-ID: 2000488
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 103 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1585210433955065 3.9752e-08  
a 3.169597605661367 1.3248e-08 au
q 2.667149686068028 1.2413e-07 au
i 11.51875974717612 4.9011e-06 deg
node 84.22160070157143 2.2659e-05 deg
peri 71.84197022124357 2.7646e-05 deg
M 81.85116377419361 1.4999e-05 deg
tp 2458531.873352799017
(2019-Feb-17.37335280)
8.5883e-05 TDB
period 2061.126381266482
5.64
1.2923e-05
3.538e-08
d
yr
n .1746617787594345 1.0951e-09 deg/d
Q 3.672045525254706 1.5348e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2321  
   data-arc span      43454 days (118.97 yr)  
   first obs. used      1901-02-13  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44087  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:28:32  

Additional Information
 Earth MOID = 1.70553 au 
 Jupiter MOID = 1.51866 au 
 T_jup = 3.152 
[ hide covariance matrix ]
Orbital Elements at Epoch 2455117.5 (2009-Oct-13.0) TDB
Reference: JPL 103 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1680555787659721 4.0673e-08  
q 2.628246894548464 1.2952e-07 au
tp 2454401.934269603007
(2007-Oct-28.43426960)
7.9248e-05 TDB
node 84.97056500688282 2.2829e-05 deg
peri 69.26810641742138 2.6858e-05 deg
i 11.49375368851845 4.8907e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2321  
   data-arc span      43454 days (118.97 yr)  
   first obs. used      1901-02-13  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44087  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:28:32  

Additional Information
 Jupiter MOID = 1.51866 au 
 T_jup = 3.152 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.654269670433751E-15 -5.250000136327483E-15 -1.124055408539153E-13 -7.607131657245863E-16 2.333828246885192E-14 -3.547805571421987E-15
q -5.250000136327483E-15 1.677544766295647E-14 1.730697961583615E-13 3.154369073275315E-15 -9.907279521773864E-14 1.494364952283506E-14
tp -1.124055408539153E-13 1.730697961583615E-13 6.280198602258294E-9 1.058454457936795E-11 1.146117651431871E-9 1.652215236123619E-11
node -7.607131657245863E-16 3.154369073275315E-15 1.058454457936795E-11 5.211794923763098E-10 -5.074786779894451E-10 -2.997986771084425E-12
peri 2.333828246885192E-14 -9.907279521773864E-14 1.146117651431871E-9 -5.074786779894451E-10 7.213638137659227E-10 4.836092689449573E-12
i -3.547805571421987E-15 1.494364952283506E-14 1.652215236123619E-11 -2.997986771084425E-12 4.836092689449573E-12 2.391927474279163E-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 8.0   n/a MPO492754 IRAS observations used: 20
diameter diameter 168.117 km 2.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 32.645 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Stephens, R.D. (2014) Minor Planet Bull. 41, 226-230.]
[Pilcher, F. (2019) Minor Planet Bull. 46, 360-363.]
geometric albedo albedo 0.047   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.691   0.006 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=7.94, mean=12.60, max.=17.25) deg.
U-B UB 0.368   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=7.94, mean=12.60, max.=17.25) deg.
Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 4 color indices

488 Kreusa (A902 MC)          Discovered 1902-Jun-26 by Wolf, M. and Carnera, L. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A902 MC = 1947 KH = 1977 YD = A901 CA = A905 XA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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