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154 Bertha (A875 VD)
Classification: Main-belt Asteroid          SPK-ID: 2000154
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 51 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07665492565467155 1.2955e-08  
a 3.195956962729348 1.1927e-08 au
q 2.950971119355799 3.8841e-08 au
i 20.97113774352565 3.6622e-07 deg
node 36.71697268628546 1.1203e-06 deg
peri 160.8460187413424 8.8143e-06 deg
M 73.68183874565734 8.302e-06 deg
tp 2458969.372272638942
(2020-Apr-29.87227264)
4.7241e-05 TDB
period 2086.891213189811
5.71
1.1682e-05
3.198e-08
d
yr
n .1725053983287133 9.6566e-10 deg/d
Q 3.440942806102896 1.2841e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2827  
   data-arc span      51463 days (140.90 yr)  
   first obs. used      1880-09-12  
   last obs. used      2021-08-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42318  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 06:16:01  

Additional Information
 Earth MOID = 1.95278 au 
 Jupiter MOID = 1.53061 au 
 T_jup = 3.087 
[ 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 7.71   n/a E2021B10 IRAS observations used: 13
diameter diameter 192.611 km 2.189 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 25.224 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Pilcher, F. (2012) Minor Planet Bull. 39, 57-60.]
[Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.]
geometric albedo albedo 0.044   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B C   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)

154 Bertha (A875 VD)          Discovered 1875-Nov-04 by Henry, Prosper at Paris
In their cooperative program it will probably never be known which of the Henry brothers discovered which planet. With strict impartiality, these discoveries were announced as having been made alternatively by Prosper and by Paul.
Note: "planet" implies "minor planet"
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2012-Mar-16 09:20 < 00:01 Jupiter 1.6436702753115 1.64367013381921 1.64367041680406 5.44997603007807 5.35458597914664 2456002.888900952 0.105055703907165 33.1077621556251 1.86397653823103 -78.3721935311411 28642376.2047502 T 51 CATAB v2.0g-lin.ifort 2021-Aug-25 06:18:33 2021-Aug-25 06:18
2023-Apr-25 10:18 < 00:01 Jupiter 1.53460191137764 1.53460171964423 1.53460210311104 5.42850790758004 5.3258613785927 2460059.929375936 0.170820991053145 14.5639316327814 9.25998122645665 82.3013002676529 15731072.7114247 T 51 CATAB v2.0g-lin.ifort 2021-Aug-25 06:18:33 2021-Aug-25 06:18
2034-May-08 23:39 < 00:01 Jupiter 1.85640606779734 1.85640560080255 1.85640653479244 4.94896380406065 4.85589359546355 2464091.485480241 0.411762609289117 47.8965548924925 7.21595580777327 -61.426406784803 37153651.5533554 T 51 CATAB v2.0g-lin.ifort 2021-Aug-25 06:18:33 2021-Aug-25 06:18
2143-Jan-27 23:35 00:02 Jupiter 1.83346303977929 1.83346138641265 1.83346469322306 5.25747140165155 5.16885348513082 2503801.482587313 1.67648447116608 604.185546556303 2.34853180117377 -82.0436248236466 26030022.2415413 T 51 CATAB v2.0g-lin.ifort 2021-Aug-25 06:18:33 2021-Aug-25 06:18
2154-Feb-20 16:11 00:02 Jupiter 1.52793199098418 1.52793164274223 1.52793233923344 5.47151202566039 5.36923889311005 2507843.174114410 1.56442564875078 174.353652380743 4.06190363533738 -84.440806280161 20867800.5828294 T 51 CATAB v2.0g-lin.ifort 2021-Aug-25 06:18:33 2021-Aug-25 06:18
2165-Mar-29 18:57 00:02 Jupiter 1.66135161787475 1.66135001838408 1.66135321736684 5.32084341861062 5.22414546949787 2511898.289371466 1.9070918545485 113.666315697815 15.312690075665 45.3190335562328 11402737.1796299 T 51 CATAB v2.0g-lin.ifort 2021-Aug-25 06:18:33 2021-Aug-25 06:18
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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