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536 Merapi (A904 JF)
Classification: Outer Main-belt Asteroid          SPK-ID: 2000536
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 104 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08664396911328226 3.8682e-08  
a 3.499026275560453 1.6579e-08 au
q 3.19585675101423 1.2893e-07 au
i 19.42300138681012 4.1882e-06 deg
node 59.21684998258293 1.1115e-05 deg
peri 295.4739694331271 2.6837e-05 deg
M 153.4898940535069 2.6405e-05 deg
tp 2457981.212922909375
(2017-Aug-15.71292291)
0.00017322 TDB
period 2390.667802693952
6.55
1.6991e-05
4.652e-08
d
yr
n .1505855391511651 1.0702e-09 deg/d
Q 3.802195800106677 1.8015e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2827  
   data-arc span      42556 days (116.51 yr)  
   first obs. used      1904-05-13  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40467  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 01:54:17  

Additional Information
 Earth MOID = 2.25168 au 
 Jupiter MOID = 1.67812 au 
 T_jup = 3.028 
[ 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 8.2   n/a MPO347516  
diameter diameter 147.066 km 5.524 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 8.791 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Koff, R.A. (2000) Minor Planet Bull. 27, 26-27.]
[Ditteon, R.; Hawkins, S. (2007) Minor Planet Bull. 34, 59-64.]
[Behrend, R. (2020) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.048   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
B-V BV 0.694   0.023 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=7.16, mean=8.15, max.=9.13) deg.
U-B UB 0.294   0.027 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=2; phase (min.=7.16, mean=8.15, max.=9.13) deg.
Tholen spectral type spec_T X   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices

536 Merapi (A904 JF)          Discovered 1904-May-11 by Peters, G. H. at Washington
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A904 JF = 1950 KE = 1957 LP 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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